Chapter 21.6, Problem 41CC

Identify the best reagents to console the following reaction

Identify products A and B from the given 1H NMR data. Treatment of acetone [(CH3)2C=O] with dilute aqueous base forms B. Compound B exhibits four singlets in its 1H NMR spectrum at 1.3 (6 H), 2.2 (3 H), 2.5 (2 H), and 3.8 (1H) ppm. What is the structure of B?

Identify the needed reagents in the following scheme:

Draw the step by step reaction mechanism of the following Achmatowicz reaction. reagents:NBS NaHCO3 H2O

Provide a detailed arrow-pushing mechanism for the following transformation: Me PHOH PhO. Et Мe Me Et Me OTs Provide a detailed arrow-pushing mechanism for the following transformation:

Arrange the following compounds in order of increasing reactivity towards electrophilic aromatic substitution: Aniline Benzoic acid Chlorobenzene Ethylbenzene

The Stork reaction is a condensation reaction between an enamine donor and an α,β-unsaturated carbonyl acceptor. The overall reaction consists of a three-step sequence of formation of an enamine from a ketone, Michael addition to an α,β-unsaturated carbonyl compound, and hydrolysis of the enamine in dilute acid to regenerate the ketone. Consider the Stork reaction between cyclohexanone and propenal   Draw the structure of the product of the enamine formed between cyclohexanone and dimethylamine. - Michael addition to an α,β-unsaturated carbonyl compound, and - hydrolysis of the enamine in dilute acid to regenerate the ketone.

Determining the Regioselectivity of Opening an Epoxide Ring What product is formed when 2,2-dimethyloxirane is treated with each set of reagents: −OCH3 followed by H2O, or CH3OH and H2SO4?

Show how the following compound can be prepared from benzene: