• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Unit 1 Chemistry
Unit 1 Chemistry

... They have a distinctive odor depending on which ester you have. They are responsible for many flavors and odors of food. ...
Lecture 7a
Lecture 7a

...  In the lab, an unknown carboxylic acid is reacted with an ...
Lecture 14a - UCLA Chemistry and Biochemistry
Lecture 14a - UCLA Chemistry and Biochemistry

...  Solvent: DMSO (cannot be used in Chem 30CL), PTC conditions, solid state reaction  An one-pot reaction is not advisable here because the reactants, the intermediate and the product are very difficult to separate from each other (anhydrous ZnI2 is not available!)  The Corey-Chaykovsky reagent can ...
Slides
Slides

... t Unable to form a carbocation, the protonated alcohol waits ...
Chapter Nine: Alcohols, Ethers and Epoxides
Chapter Nine: Alcohols, Ethers and Epoxides

questions on the dehydration of alcohols
questions on the dehydration of alcohols

... ALCOHOLS: DEHYDRATION 1. a) Ethanol can be converted into ethene by passing the vapour over hot aluminium oxide, and collecting the ethene over water. Write the equation for the reaction. b) Ethanol can also be converted into ethene by heating it at 170°C with excess concentrated sulphuric acid. Bef ...
- professional publication
- professional publication

... Electrophilic Aromatic Substitutions Effect of Substituent Groups, Determination of Orientation, Determination of Relative Reactivity, Classification of Substituent Groups, Mechanism of Nitration, Sulphonation, Halogenation, Friedel Craft’s Alkylation and Friedel Craft’s Acylation, Reactivity and Or ...
ZADANIE 1
ZADANIE 1

A-level Paper 2 Practice Paper 1 - A
A-level Paper 2 Practice Paper 1 - A

... In a similar three-step mechanism, one molecule of X reacts further with one molecule of ethanal. The product is a trimer containing six carbon atoms. Deduce the structure of this trimer. ...
Esters
Esters

... • Esters have strong, sweet smells. • Their bouquet is often floral or fruity. • This means they are used in food flavourings & ...
Chapter 14 Selenium reagents
Chapter 14 Selenium reagents

...  Selenoxides with a -hydrogen can readily undergo thermal eliminationreaction to generate alkene.  Using this procedure, we can achieve conversion of ketones to enones and synthesis of allylic alcohols.  The variants of the procedure is in the preparation of the selenide rather than in the oxida ...
File
File

... (ii) Ethylamine is treated with Nitrous acid? 26. (a) Write Zwittor ion structure of Glycine. (b) What is denaturation of proteins? (c) Why is ammonia used in ice factories and as a refrigerant? 27. (a) CO2 is a gas while SiO2 is a solid at room temperature, Explain. (b) Write two difference between ...
Lecture Resource ()
Lecture Resource ()

... LiAlH4 is a stronger reducing agent than NaBH4 LiAlH4 is used to reduce compounds that are nonreactive toward NaBH4 ...
CHEMISTRY 1 FINAL EXAM REVIEW
CHEMISTRY 1 FINAL EXAM REVIEW

... Module 6 1.) Identify the type of reaction for those listed below: A. a reaction in which a single compound is broken down into simpler substances B. a reaction in which oxygen reacts with another substance, often producing heat or light C. a reaction in which the atoms of one element replace the at ...
Exp`t 88 - Chemistry Courses
Exp`t 88 - Chemistry Courses

... consider what by-product is formed if acetic acid were used, and how this could affect the equilibrium between reagent and products.) 2. In developing this experiment, precautions were taken to ensure that acetic anhydride and sulfuric acid were mixed together before the isopropyl alcohol was added. ...
Chapter 7: Structure and Synthesis of Alkenes
Chapter 7: Structure and Synthesis of Alkenes

... C-X (needs strong base, HO-, CH3O-) X-: leaves at the same time ...
TV RajanBabu Chemistry, 730 Autumn 1997
TV RajanBabu Chemistry, 730 Autumn 1997

CLASS-X SC (Chemical Reactions and Equations)
CLASS-X SC (Chemical Reactions and Equations)

... (d) None of these is correct. 3. The reaction H2+Cl2 2HCl represents: (a) Oxidation (b) Reduction (c) Decomposition (d) Combination 4. In the reaction PbO + C Pb + CO (a) Pbo is oxidized (b) C act as an oxidizing agent (c) C act as a reduction agent (d) Reaction does not represent redox reaction. 5. ...
Test 2
Test 2

... 8. A sample of a hydrocarbon, a compound containing only carbon and hydrogen, was combusted for elemental analysis. A 6.014mg sample of the compound produced 17.60mg of CO2 (44.01g/mol) and 10.81mg of H2O. What is the empirical formula for the hydrocarbon? ...
Alcohols - Calderglen High School
Alcohols - Calderglen High School

... What compound is formed by the oxidation of propan-2-ol? A CH3CH2CHO B CH3CO CH3 C CH3CH2COOH D CH3CH2 CH2OH ...
Practice Test 1 (Chapters 1-7)
Practice Test 1 (Chapters 1-7)

... 32. Which atomic particle determines the chemical a. Dry ice sublimes when left on the demo behavior of an atom? table in lecture. a. proton b. The light on a candle burns until a bell jar is b. electron placed over it for a period of time. c. neutron c. When a few drops of red food coloring are d. ...
Named Reactions Of Haloalkanes and haloarenes
Named Reactions Of Haloalkanes and haloarenes

3.4 How do we use the Activity Series
3.4 How do we use the Activity Series

... Directions: Determine if each single replacement reaction will occur based on the activity series. 1. Write “Reaction” if the reaction will take place 2. Balance the reaction that takes place. 3. Write “No reaction” if the reaction will not take place. ...
nucleophilic addition
nucleophilic addition

... Planning a Grignard synthesis of an alcohol: a) The alcohol carbon comes from the carbonyl ...
LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034  PART-A
LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034 PART-A

... 01. What are the effects of reagents and solvents in Stobbe reaction? Give examples. 02. How is carbene synthesized? In what form it is used in reactions? Give an example. 03. Identify any two types of 1,3-dipolar compounds used for cycloaddition reactions. Give an example. ...
< 1 ... 311 312 313 314 315 316 317 318 319 ... 333 >

Strychnine total synthesis



Strychnine total synthesis in chemistry describes the total synthesis of the complex biomolecule strychnine. The first reported method by the group of Robert Burns Woodward in 1954 is considered a classic in this research field. At the time it formed the natural conclusion to an elaborate process of molecular structure elucidation that started with the isolation of strychnine from the beans of Strychnos ignatii by Pierre Joseph Pelletier and Joseph Bienaimé Caventou in 1818. Major contributors to the entire effort were Sir Robert Robinson with over 250 publications and Hermann Leuchs with another 125 papers in a time span of 40 years. Robinson was awarded the Nobel Prize in Chemistry in 1947 for his work on alkaloids, strychnine included. The process of chemical identification was completed with publications in 1946 by Robinson and later confirmed by Woodward in 1947. X-ray structures establishing the absolute configuration became available between 1947 and 1951 with publications from J. M. Bijvoet and J.H. Robertson .Woodward published a very brief account on the strychnine synthesis in 1954 (just 3 pages) and a lengthy one (42 pages) in 1963.Many more methods exist and reported by the research groups of Magnus, Overman, Kuehne, Rawal, Bosch, Vollhardt, Mori, Shibasaki, Li, Fukuyama Vanderwal and MacMillan. Synthetic (+)-strychnine is also known. Racemic synthesises were published by Padwa in 2007 and in 2010 by Andrade and by Reissig.In his 1963 publication Woodward quoted Sir Robert Robinson who said for its molecular size it is the most complex substance known.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report