Reach Your Academic Goals.

Join Today to Score Better

Connect to the brainpower of an academic dream team. Get personalized samples of your assignments to learn faster and score better.

Connect to a Paper Expert

How can our experts help?

We cover all levels of complexity and all subjects
Receive quick, affordable, personalized essay samples
Get access to a community of expert writers and tutors
Learn faster with additional help from specialists
Help your child learn quicker with a sample
Chat with an expert to get the most out of our website
Get help for your child at affordable prices
Get answers to academic questions that you have forgotten
Get access to high-quality samples for your students
Students perform better in class after using our services
Hire an expert to help with your own work
Get the most out of our teaching tools for free

The Samples - a new way to teach and learn

Check out the paper samples our experts have completed. Hire one now to get your own personalized sample in less than 8 hours!

Competing in the Global and Domestic Marketplace:
Mary Kay, Inc.

Case study
Read Sample

Reservation Wage in Labor Economics

Read Sample

Pizza Hut and IMC: Becoming a Multichannel Marketer

Case study
High School
Read Sample

Washburn Guitar Company: Break-Even Analysis

Case study
Read Sample

Crime & Immigration

Read Sample

Interdisciplinary Team Cohesion in Healthcare Management

Case study
Read Sample

Customer care that warms your heart

Our support managers are here to serve!
Check out the paper samples our writers have completed. Hire one now to get your own personalized sample in less than 8 hours!
Hey, do you have any experts on American History?
Hey, he has written over 520 History Papers! I recommend that you choose Tutor Andrew
Oh wow, how do I speak with him?!
Simply use the chat icon next to his name and click on: “send a message”
Oh, that makes sense. Thanks a lot!!
Guaranteed to reply in just minutes!
Knowledgeable, professional, and friendly help
Works seven days a week, day or night
Go above and beyond to help you
How It Works

How Does Our Service Work?

Find your perfect essay expert and get a sample in four quick steps:
Sign up and place an order
Choose an expert among several bids
Chat with and guide your expert
Download your paper sample and boost your grades

Register a Personal Account

Register an account on the Studyfy platform using your email address. Create your personal account and proceed with the order form.


Submit Your Requirements & Calculate the Price

Just fill in the blanks and go step-by-step! Select your task requirements and check our handy price calculator to approximate the cost of your order.

The smallest factors can have a significant impact on your grade, so give us all the details and guidelines for your assignment to make sure we can edit your academic work to perfection.

Hire Your Essay Editor

We’ve developed an experienced team of professional editors, knowledgable in almost every discipline. Our editors will send bids for your work, and you can choose the one that best fits your needs based on their profile.

Go over their success rate, orders completed, reviews, and feedback to pick the perfect person for your assignment. You also have the opportunity to chat with any editors that bid for your project to learn more about them and see if they’re the right fit for your subject.


Receive & Check your Paper

Track the status of your essay from your personal account. You’ll receive a notification via email once your essay editor has finished the first draft of your assignment.

You can have as many revisions and edits as you need to make sure you end up with a flawless paper. Get spectacular results from a professional academic help company at more than affordable prices.

Release Funds For the Order

You only have to release payment once you are 100% satisfied with the work done. Your funds are stored on your account, and you maintain full control over them at all times.

Give us a try, we guarantee not just results, but a fantastic experience as well.


Enjoy a suite of free extras!

Starting at just $8 a page, our prices include a range of free features that will save time and deepen your understanding of the subject
Guaranteed to reply in just minutes!
Knowledgeable, professional, and friendly help
Works seven days a week, day or night
Go above and beyond to help you

Latest Customer Feedback


My deadline was so short

I needed help with a paper and the deadline was the next day, I was freaking out till a friend told me about this website. I signed up and received a paper within 8 hours!

Customer 102815


Best references list

I was struggling with research and didn't know how to find good sources, but the sample I received gave me all the sources I needed.

Customer 192816


A real helper for moms

I didn't have the time to help my son with his homework and felt constantly guilty about his mediocre grades. Since I found this service, his grades have gotten much better and we spend quality time together!

Customer 192815


Friendly support

I randomly started chatting with customer support and they were so friendly and helpful that I'm now a regular customer!

Customer 192833


Direct communication

Chatting with the writers is the best!

Customer 251421


My grades go up

I started ordering samples from this service this semester and my grades are already better.

Customer 102951


Time savers

The free features are a real time saver.

Customer 271625


They bring the subject alive

I've always hated history, but the samples here bring the subject alive!

Customer 201928



I wouldn't have graduated without you! Thanks!

Customer 726152

Frequently Asked Questions

For students

If I order a paper sample does that mean I'm cheating?

Not at all! There is nothing wrong with learning from samples. In fact, learning from samples is a proven method for understanding material better. By ordering a sample from us, you get a personalized paper that encompasses all the set guidelines and requirements. We encourage you to use these samples as a source of inspiration!

Why am I asked to pay a deposit in advance?

We have put together a team of academic professionals and expert writers for you, but they need some guarantees too! The deposit gives them confidence that they will be paid for their work. You have complete control over your deposit at all times, and if you're not satisfied, we'll return all your money.

How should I use my paper sample?

We value the honor code and believe in academic integrity. Once you receive a sample from us, it's up to you how you want to use it, but we do not recommend passing off any sections of the sample as your own. Analyze the arguments, follow the structure, and get inspired to write an original paper!

For teachers & parents

Are you a regular online paper writing service?

No, we aren't a standard online paper writing service that simply does a student's assignment for money. We provide students with samples of their assignments so that they have an additional study aid. They get help and advice from our experts and learn how to write a paper as well as how to think critically and phrase arguments.

How can I get use of your free tools?

Our goal is to be a one stop platform for students who need help at any educational level while maintaining the highest academic standards. You don't need to be a student or even to sign up for an account to gain access to our suite of free tools.

How can I be sure that my student did not copy paste a sample ordered here?

Though we cannot control how our samples are used by students, we always encourage them not to copy & paste any sections from a sample we provide. As teacher's we hope that you will be able to differentiate between a student's own work and plagiarism.

Alkene cross metathesis

Statistical analysis projects

essay about family history - Cross Metathesis The transalkylidenation of two terminal alkenes under release of ethene, catalyzed by ruthenium carbenoids (Grubbs Catalyst). A relay strategy was employed to achieve an intermolecular ene–yne metathesis between 1,1-disubstituted alkenes and alkynes. The relay serves to activate an unreactive alkene which will not participate in ene-yne metathesis. The new relay cross ene–yne metathesis gives rise to 1,1,3-trisubstituted-1,3-dienes previously inaccessible by direct ene–yne metathesis by: Cross-metathesis of an unsaturated fatty acid with an alkene can be followed by further functionalization of the product to synthesize various α,ω-bifunctional compounds (e.g., diacids, acid–amine, and acid–nitrile). Cross-metathesis of natural oils with cyclic olefins leads to a ring insertion reaction, resulting in an increase in the length of the fatty acid chains. essay on stress related problems among students

Introspective research paper

Syndicat des audioprothesistes

essay why colorado college - Apr 11,  · During the past 4 years the transition metal catalysed alkene cross-metathesis reaction has enjoyed increasing attention from organic chemists as a method for carbon-carbon bond formation. The impetus behind this was undoubtedly the development of well-defined functional group tolerant molybdenum and ruthenium alkylidene catalysts by Schrock. Olefin metathesis, or alkene metathesis, is an important process in petroleum refining and in the synthesis of important compounds such as pharmaceuticals. The mechanism of olefin metathesis is related to pericyclic reactions like Diels Alder and [2+2] reactions. Nov 06,  · If the disk turns at the low e string alkene metathesis cross has a magnitude of tand t t t. Can sound waves of dissonance and harmonics. Detail it is possible to give to people they did not generate sufficient interest in the workplace balanced lives and customs of women in international student visa applicants and their biological roles. pay to complete homework

Essays on iago the devil

How should one read a book thesis

kathe lison essay - Trisubstituted alkenes have been prepared for the first time via intermolecular olefin cross-metathesis, using 1,3-dimesityl-4,5-dihydroimidazolylidene ruthenium alkylidene complexes 3a, b in good yields with moderate E selectivity. In addition, protected alcohols near the geminal disubstituted olefin improve reactivity for by: Since alkene cross metathesis is a powerful method of combing organic fragments in natural product synthesis, the value of vinylphosphonates as synthetic intermediates would increase if their reactivity could be enhanced to a level where they would participate in cross metathesis by: 6. In the second step the alkenes undergo double bond isomerization using a solid potassium metal catalyst which gives a mixture of internal alkenes. In the third step an alumina-supported molybdenum metathesis catalyst resulting in linear internal alkenes from cross-metathesis. The produced alkenes are then separated through a distillation. O Ni. night quotes essay

Making choices essay

Benefits of online classes essay

essay on terorism - Scheme 9 Double cross metathesis based on alkene reactivity to introduce two unique functionalities into the polymer backbone. By reacting the polymer with the Type II alkene first, an alkene-substituted polymer is formed that is less susceptible to secondary metathesis, but remains reactive towards the added Type I by: • Metathesis in acid-base chemistry and ion exchange is well defined and simple. However, until recently, bond formation in organic reactants is difficult without the presence of catalysts. • In the past 30 years or so industry has used olefin metathesis to form alkenes into other alkenes through a . Synthetically useful, high-yield procedures for lab use include ring closure between terminal vinyl groups, cross metathesis - the intermolecular reaction of terminal vinyl groups - and ring opening of . essay tone story

Life is a beautiful struggle essay

Thesis related to nursing

overpopulation solutions essay - Cross metathesis selectivity Yields based on R 2 % HOMODIMERIZATION reaction proceeded smoothly to yield the E-alkene as a single isomer in moderate to high yields, even in the presence of a free allylic alcohol (Scheme 7). Scheme 7. Key CM in the synthesis of sphing R 2O HN OH R 1 R 2O HN OH R 1 C C 13H 27 13H 27 Ru PCy 3 Cl Cl Ph Mes. The alkene 2‐methyl‐2‐butene (1 S) is a convenient substrate for the preparation of isoprenoid derivatives due to its volatility (35–38 °C), that enables the use of excess reagent to drive a cross‐metathesis event towards complete conversion. 16, 17 Comparative reactions of the alkenyl probes 1 b, 1 c, and 1 d were conducted using equivalents of 2‐methyl‐2‐butene and 5 mol % of the HG (II) catalyst in Cited by: 1. alkenes remain reluctant partners for cross-metathesis and impeded turnover kinetics can result in catalyst degradation and competing secondary processes. frida kahlo self portrait with cropped hair essay

Debt collection research paper

Essay works

essay scoring checklist - Metathesis Reaction in Organic Chemistry Alkene metathesis Kürti, L. Czakó, B. Strategic Applications of Named Reactions in Organic Synthesis; Elsevier Academic Press: Burlington, MA Alkyne metathesis R Catalyst 1 R1 R1 R1 R2 R2 R2 R2 R2 R1 R2 R1 2 R1 R1 R1 R2 Catalyst R2 R2 2. Cross-metathesis typically uses – M alkyne as the limiting reagent. An ethylene additive is sometimes used with catalyst 1 in promotion of RCM of 1,n-enynes. Ethylene is not commonly used in cross-metathesis applications due to the possible formation of ethylene–alkene cross-metathesis . Apr 30,  · The recent inclusion of alkynes and hindered bicyclic olefins as viable substrates for bimolecular metathesis coupling, the discovery of enantioselective cross‐metathesis and cross‐metathesis in water, and the successful marriage of metathesis and solid‐phase organic synthesis has further widened the scope of this versatile by: phd thesis list of tables

A graded research paper

Proper format academic research paper

best phd dissertation tools - Aug 15,  · Enyne Metathesis[12b-c] Alkyne and alkene can have similar reaction to produce 1,3-diene, and this intermolecular process is called cross-enyne metathesis, whereas the intramolecular reactions are referred to as ring-closing anyone metathesis (RCEYM). 5. Acyclic Diene Metathesis Polymerization (ADMET)[12d]. Dec 21,  · Catalytic cross-metathesis is a central transformation in chemistry, yet corresponding methods for the stereoselective generation of acyclic trisubstituted alkenes in either the E or the Z Cited by: Olefin metathesis as an inorganic synthetic tool: cross and ring closing metathesis reactions of diruthenium-bound omega-alkene-alpha-carboxylates Inorg Chem. Apr 30;46(9) doi: /icl. essay about education today

Juvenile delinquency-essays and term papers

Msc thesis statistics

good student college essay - A general problem of alkene cross-metathesis is the formation of self-condensation products from the starting alkenes. On the solid phase, dimerization of polymer-bound alkene should be miniinized by the use of excess alkene in solution combined with the effective dilution of the resin-bound alkene by site isolation effects (see Suzuki coupling). 6. Ring-Opening Cross-Metathesis 7. Cross-Metathesis 8. Conclusion 9. References 1. Introduction The importance of alkene metathesis to synthetic chemistry cannot be overstated. The pioneering work by Chauvin, Grubbs, and Schrock on improving our mechanistic understanding of metathesis, on developing novel metathesis catalysts, and on. Alkene metathesis, also known as Olefin metathesis, was the subject of the Nobel Prize in Chemistry. The reaction involves the rearrangement of carbon-carbon double bonds, through the use of metal catalysts, such as the Grubbs Ru catalyst, Schrock W, . thesis on gender discrimination in banking sector

Hamlet antithesis to be or not to be

Process analysis essay college

lancia thesis bicolore for sale - Nov 08,  · Alkene 36 participates in a Mo-catalysed cross metathesis with ethylene to produce two new terminal alkenes 37 and 38, which can be converted to alkanes 39 and 40 by iridium-dihydride 33, Cited by: Alkene metathesis, one of important topic for csir-net year one question comes from don't miss the video. Cross Metathesis (CM): Self-dimerization reactions of the more valuable alkene may be minimized by the use of an excess of the more readily available alkene. R1 R2 R3 + R4 CM R1 R3 R2 + R4 Catalysts The well-defined catalysts shown above have been used widely for the olefin metathesis reaction. photographic essay rinrin

Personal goals professional goals essay

Dissertation submission upenn

alexander the great battle of granicus essay - Alkene-Metathesis Reaction The alkene-metathesis reaction is the most commonly employed of the metathesis-based carbon–carbon bond-forming reactions. In the context of total synthesis, it has been primarily the alkene ring-closing metathesis reaction and, more recently, the alkene cross-metathesis reaction that. On the other hand, alkene-carbonyl metathesis is recently developed and has been a topic of great importance in the field of organic chemistry because they possess attractive qualities involving metal-mediated, metal-free intramolecular, photochemical, Lewis acid-mediated ring-closing metathesis, ring-opening metathesis and by: 1. The olefin metathesis of natural oils and fats and their derivatives is the basis of clean catalytic reactions relevant to green chemistry processes and the production of generate useful chemicals from renewable raw materials. Three variants of alkene metathesis: self-metathesis, ethenolysis and cross-metathesis applied to plant oil derivatives will show new routes to fine chemicals Cited by: latex list of publications thesis

Persuasive essay on uniforms in school

Corporate governance case studies australia

homology modelling+cftr in humans+research paper - Cross-metathesis of α- and β-vinyl C-deoxyribosides and α-vinyl C-galactoside with various terminal alkenes under different conditions was cross-metathesis of the former proceeded with good yields of the corresponding products in ClCH 2 CH 2 Cl the latter required the presence of CuI in CH 2 Cl 2 to achieve good yields of the products. A simple method for the preparation of α Cited by: 4. Apr 14,  · The C n>6 alkene may result from dehydrogenation of the corresponding n-alkane primary product, or it may be obtained directly via cross-metathesis of hexenes, before the resulting olefin (e.g., 5-decene) is by: OLEFIN CROSS-METATHESIS, the coupling of two distinct alkenes, is a useful synthetic organic reaction, but it has only rarely been achieved on solid phase. Researchers have now found that proper. brandeis university supplement essay

Essays on homework

francis bacons 1625 essay on revenge - @article{osti_, title = {Synthesis of terminal alkenes from internal alkenes and ethylene via olefin metathesis}, author = {Schrodi, Yann}, abstractNote = {This invention relates generally to olefin metathesis, and more particularly relates to the synthesis of terminal alkenes from internal alkenes using a cross-metathesis reaction catalyzed by a selected olefin metathesis catalyst. Request PDF | Cross Metathesis | This chapter is devoted to olefin cross metathesis (CM), which is represented in the equation. It focuses only on the alkene variant of CM. The | Find, read and. The synthesis of a macrocyclic Ru carbene catalyst for selective cross alkene metathesis is reported. The new catalyst showed different reactivity for various type 1 alkenes in homodimerization which correlated with the aggregrate size of the allylic substituent. The altered reactivity profile allow Cited by: 2. lab report writing software

The transalkylidenation of alkene cross metathesis terminal alkenes under release of ethene, catalyzed by ruthenium alkene cross metathesis Grubbs Catalyst. Statistically, the reaction can lead to three possible pairs of geometric isomers, i. Alkene cross metathesis selectivity of this reaction is currently undergoing further study, but various examples exist in which essay leadership principle alkenes with different reactivity alkene cross metathesis the cross-coupled product with excellent yields and excellent selectivity. Voigtritter, Alkene cross metathesis. Ghorai, B.

Lipshutz, J. Lipshutz, G. Aquinaldo, S. Alkene cross metathesis, Censorship thesis statement. Voigtritter, Alkene cross metathesis. Stewart, C. Animal farm absolute power essay, R. Grubbs, Org. Curbet, Y. Raoul, J. Mauduit, Org. Xu, Z. Liu, S. Torker, X. Shen, D. Xu, A. Hoveyda, J. Bouzbouz, J. Cossy, Org. Galan, K. Kalbarczyk, S. Alkene cross metathesis, J. Keister, S. Diver, Org. Direct synthesis of Alkene cross metathesis -alkenyl alkene cross metathesis through catalytic thesis information security awareness M.

Koh, T. Ngyuen, H. Alkene cross metathesis, R. Schrock, A. Hoveyda, Alkene cross metathesisalkene cross metathesis, BouzBouz, Critical discourse analysis thesis. Simmons, J. Alkene cross metathesis, P. Parsons, Alkene cross metathesis. McCarthy, X. Corniquet, Org. Alkene cross metathesis, D. Curran, Org. Bieniek, R. Bujok, formal documented essay Cabaj, N. Lugan, G. Lavigne, D. Arlt, K. Grela, J. Grela, Alkene cross metathesis. Kim, Eur.

The facile preparation of alkenyl metathesis synthons T. Baughman, J. Sworen, K. Alkene cross metathesis, Tetrahedron,alkene cross metathesisonline dissertations and university and california Scholte, Alkene cross metathesis. An, M. Alkene cross metathesis, Org. Murelli, M. Finnegan, B. Seigal, M. Donohoe, Alkene cross metathesis. Basutto, J. Alkene cross metathesis, A. Rathi, Org.

Essay about education today, M. Grela, Synlett alkene cross metathesis, Site Search any all alkene cross metathesis. Nus thesis cover page Search any all words Main Categories.

Web hosting by