Question

Intext Questio
11.4 Show how are the following alcohols prepared by the reaction of a suita
Grignard reagent on methanal ?
CH,OH
(i) CH-CH-CH,OH
(ii)
CH,
11.5 Write structures of the products of the following reactions:
1 CH - CH = CH, H,O/H
O
CH,-C-OCH,
NaBH
NaBH
-
(iii) CH-CH2-CH=CHO
CH​

Answer 1

Answer:

In the Grignard reagent reaction, the first step of the reaction is the nucleophilic addition of Grignard reagent to the carbonyl group to form an adduct, Hydrolysis of adduct results in the formation of alcohol.

From here, it is clear that HCHO gives CH2OH groups, so R of Grignard reagent is the remaining part of given alcohols. Thus, select the suitable Grignard reagent by substituting the value of R. 

Answer 2

Answer:

The correct answer is shown in the attachment.