None Substrates containing Evan's auxiliary could be used not only for the asymmetricalkylation or aldol reactions, but also for the asymmetric Diels-Alder reaction. Please use yourknowledge of the Evan's auxiliarie's to predict the main diastereomer of this reaction. Hint:Et2 AICI acts as a chelating LA here.MeN..Et₂AICI (2 eq)-78 °C, >99:1 dr(provide stereochemistry)i-Pr

The question asks students to predict the main diastereomer of an asymmetric Diels-Alder reaction…

Answered: Substrates containing Evan's auxiliary…

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter14: Elimination

Section: Chapter Questions

Problem 36E

See similar textbooks

Similar questions

3. Draw the expected product/products of the following elimination reaction schemes and state if they are undergoing E1/E2. ✩ Note TsCl, Et3N converts the -OH to -OTS with the same stereochemistry. a) b) Me Me OH OH Et Et H3O+ 1) TSCI, Et3N 2) NaH, DMF ? ?
draw an electron-pushing mechanism that shows the formation of the anti looking products using AE then SN2 mechanistic pathway
resource from Cengage Learning - Google Chrome ssignment/takeCovalentActivity.do?locator=assignment-take e by the Aldol Condensation (References) OH base + H,0 heat H. H3C H. The aldol reaction is a carbonyl condensation reaction between two carbonyl partners and involves a combination of nucleophilic addition and a-substitution steps. One partner is converted into an enolate ion nucleophile and adds to the electrophilic carbonyl group of the second partner. In the classic aldol reaction, the carbonyl partners are aldehydes or ketones, although aldehydes are more reactive. The product is a B-hydroxy carbonyl compound. In the mixed aldol reaction, the best results are obtained when one of the partners does not have an a-hydrogen. It cannot form an enolate anion and can therefore not undergo self-reaction. The enolizable aldehyde is added slowly to a basic solution of the first aldehyde so that the mixed product is preferentially formed. Under reaction conditions slightly more vigorous…
Draw the (pericyclic) reaction (reaction 1), including all mechanistic steps, that lead from the starting materials to the intermediate product. Show all isomers that can be formed and provide an explanation as to why that is. Determine the configuration of all chiral centers. I included the molecule, the retrosynthesis of the molecule, and reaction 1 to help solve this question.
Only typed solution
what would the product look like for this reaction with the favoured stereochemistry.
For this step of the synthesis, draw the arrow pushing mechanism for the following reaction. Include stereochemistry.
5. Assign the absolute configuration of both stereocentres in 4 (R or S) and draw the mechanism of the SN2 reaction with ONE equivalent of NaSEt. Also draw the product that would be obtained using an excess of NaSEt. (hint: pay particular attention to the stereochemistry of the products) CI Me Me 4 NaSEt ?
For this mechanism, how come the iodine doesn't attach to a carbocation on the right (with the two methyl groups coming off of it)? Is it because TsO is a better leaving group? If so, why is this?
Curved arrows are used to illustrate the flow of electrons. Use the reaction conditions provided and follow the curved arrows to draw the structure of the missing intermediates and products in the following mechanism. Include all lone pairs and charges as appropriate. Ignore stereochemistry. Ignore inorganic byproducts. O: hv 0: N° Br: O: Draw Major Product I NBS Draw Major Intermediate
Draw the mechanism of the hydration and the enol ketone tautomerization reaction using one of the alkynes in calicheamicin. Use the formal arrow pushing formalism and show the product of this hydration.
Othesis. teps neceossary to synthesize this compound by yl halide; after that you can add any organic or Dound. →1-hexanol )Consider the following compounds: B = HOCH2CH2CH2CH3 CH3 HC C = CH3CH2CH2OCH2CH2CH3 D = a) Which one(s) could be reduced with NaBH4? b) Which one(s) would give a positive Tollens silver mirror test? c) Which one(s) could be oxidized with CrO3? d) Which one(s) would react with 1 or 2 equivalents CH3M9B to make a npound butyl ethyl ether larger alcohol?

SEE MORE QUESTIONS

Recommended textbooks for you

Organic Chemistry: A Guided Inquiry

Chemistry

ISBN:

9780618974122

Author:

Andrei Straumanis

Publisher:

Cengage Learning

Organic Chemistry

Chemistry

ISBN:

9781305580350

Author:

William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:

Cengage Learning

Organic Chemistry

Chemistry

ISBN:

9781305080485

Author:

John E. McMurry

Publisher:

Cengage Learning

Organic Chemistry: A Guided Inquiry

Chemistry

ISBN:

9780618974122

Author:

Andrei Straumanis

Publisher:

Cengage Learning

Organic Chemistry

Chemistry

ISBN:

9781305580350

Author:

William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:

Cengage Learning

Organic Chemistry

Chemistry

ISBN:

9781305080485

Author:

John E. McMurry

Publisher:

Cengage Learning

SEE MORE TEXTBOOKS