JEE Advanced2016ChemistryAlcohols Phenols and EthersActual
Reagent(s) which can be used to bring about the following transformation is(are)
Options
- AL i A l H 4 in C 2 H 5 2 O
- BB H 3 in THF
- CN a B H 4 in C 2 H 5 O H
- DRaney Ni / H 2 in THF
Correct answer
C. N a B H 4 in C 2 H 5 O H
Step-by-step solution
L i A l H 4 in C 2 H 5 2 O , B H 3 in ( THF ), Raney Ni / H 2 either can reduce all functional groups or can reduce some of the functional groups of the compound given above in the reactant side. But, N a B H 4 is an example of selective reducing agent. It cannot reduce, (ester group) , (carboxylic acid group) , (epoxide group). But reduces - C H = O (aldehyde group) into - C H 2 O H 1 o a l c o h o l .