3.What is the carbon nucleophile which attacks molecular bromine in the acid-catalyzed a-bromination of a ketone?(A) an enolate(D) a carbocation(B) a Grignard reagent (C) an acetylide(E) an enol

7. Predict the specific rotation of the compound shown.(A) It is impossible to predict; it must be determined experimentally.(B) Because both asymmetric centers are R, the compound is dextrorotatory.(C) Because both asymmetric centers are S, the compound is dextrorotatory.(D) Zero; the compound is achiral.(E) Because this compound represents a racemic mixture, the compound is dextrorotatory.

3.What is the carbon nucleophile which attacks molecular bromine in the acid-catalyzed a-bromination of a ketone?
(A) an enolate
(D) a carbocation
(B) a Grignard reagent
(C) an acetylide

(E) an enol

相關試題

相關試卷