Which of the following alcohols cannot be pre | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) The reaction of an acid chloride $(RCOCl)$ with an excess of a Grignard reagent $(R'MgX)$ proceeds via a ketone intermediate to form a tertiary al

Vedclass · Accepted Answer

$PhC(OH)(CH_3)Et$

Vedclass · Answer

(D) The reaction of an acid chloride $(RCOCl)$ with an excess of a Grignard reagent $(R'MgX)$ proceeds via a ketone intermediate to form a tertiary alcohol of the type $RC(OH)(R')_2$.This means that the resulting tertiary alcohol must have at least two identical alkyl or aryl groups attached to the carbon bearing the hydroxyl group.Let us analyze the options:$(A)$ $Ph_2C(OH)CH_3$: Has two identical $Ph$ groups. Can be prepared from $CH_3COCl + 2PhMgBr$.$(B)$ $PhC(OH)(CH_3)_2$: Has two identical $CH_3$ groups. Can be prepared from $PhCOCl + 2CH_3MgBr$.$(C)$ $Et_2C(OH)CH_3$: Has two identical $Et$ groups. Can be prepared from $CH_3COCl + 2EtMgBr$.$(D)$ $PhC(OH)(CH_3)Et$: Has three different groups $(Ph, CH_3, Et)$. This cannot be prepared by the reaction of an acid chloride with an excess of a single Grignard reagent,as that would require two different Grignard reagents to be added sequentially,which is not possible in a single step with excess reagent.Therefore,the correct option is $(D)$.

Which of the following alcohols cannot be prepared by the reaction of an acid chloride with an excess of a Grignard reagent followed by acidification?

Similar Questions

Which alcohol produces turbidity with Lucas reagent after five minutes $:-$

Statement-$1$ : Secondary $\&$ Tertiary alcohols can be distinguished by Lucas reagent.
Statement-$2$ : Secondary $\&$ Tertiary alcohols can be distinguished by dichromate test.

$PhMgBr + (CH_3)_2CH-OH \to A$. Identify the product $A$.

The number of primary alcohols possible with the formula $C_4H_{10}O$ is :-

Which isomer of $C_4H_9OH$ has the lowest boiling point?

Vedclass Test Series

Exam Paper Generator

Online Exam Module