Question

Predict the products for the reaction of 2-phenylethanal with:

1.) Tollen's Reagent

2.) CrO3/H2SO4

3.) Cold Dilute potassium/H+/Heat

4.) Lithium aluminum hydride

5.) Sodium borohydride

6.) Phenylmagnesium bromide then water

7.) Cyanide in the presence of acid

8.) Hydoxylamine

9.) Phenylhydrazine

10.) 2,4-nitrophenylhydrazine

11.) Ethanol and dry HCl

12.) Semicarbazide

Answer 1

1.) Tollen's Reagent             = corresponding carboxylic acid

2.) CrO3/H2SO4                 = corresponding carboxylic acid

4.) Lithium aluminum hydride = alcohol

5.) Sodium borohydride       = alcohol

6.) Phenylmagnesium bromide then water = alcohol with phenyl derivative.

7.) Cyanide in the presence of acid   = Cyanohydrin

8.) Hydoxylamine   = oxime

9.) Phenylhydrazine   = Phenylhydrazone

10.) 2,4-nitrophenylhydrazine = corresponding hydrazone

12.) Semicarbazide = semicarbazone