Compound A was treated with a large excess of | vedclass

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

Question

(D) Compound $B$ is $1,3,5$-tri(propan$-2-$ylidene)cyclohexane. This structure is formed by the reaction of $1,3,5$-trimethylcyclohexane$-1,3,5-$trica

Vedclass · Accepted Answer

Vedclass · Answer

(D) Compound $B$ is $1,3,5$-tri(propan$-2-$ylidene)cyclohexane. This structure is formed by the reaction of $1,3,5$-trimethylcyclohexane$-1,3,5-$tricarboxylate (or a similar tri-ester) with excess $CH_3MgBr$ to form a tri-tertiary alcohol,followed by dehydration using $POCl_3$ /pyridine. Each ester group $(-COOCH_3)$ reacts with $2$ equivalents of $CH_3MgBr$ to form a tertiary alcohol $(-C(OH)(CH_3)_2)$. Dehydration of these tertiary alcohols with $POCl_3$ /pyridine yields the corresponding isopropylidene groups. Therefore,compound $A$ must be the tri-ester shown in option $D$.

Column-$I$	Column-$II$
$(i)$ Acetic acid	$(a)$ Stephen
$(ii)$ Sodium phenate	$(b)$ Friedel-Crafts
$(iii)$ Methyl cyanide	$(c)$ $HVZ$
$(iv)$ Toluene	$(d)$ Kolbe's

Compound $A$ was treated with a large excess of $CH_3MgBr$. The resulting product was exposed to $POCl_3$ /pyridine to give compound $B$,as one of many products.
Which of the following compounds can be $A$ ?

Similar Questions

The end product of the above reaction is:

In the given reaction: $NH_2-CH_2-CH_2-NH_2 + C_2H_5OOC-COOC_2H_5 \xrightarrow{\text{Pyridine}} [X]$,$[X]$ will be:

The product $(C)$ of the above reaction is:

Match the reactant in Column-$I$ with the reaction in Column-$II$:
Column-$I$ Column-$II$
$(i)$ Acetic acid $(a)$ Stephen
$(ii)$ Sodium phenate $(b)$ Friedel-Crafts
$(iii)$ Methyl cyanide $(c)$ $HVZ$
$(iv)$ Toluene $(d)$ Kolbe's

Choose the response that matches the correct functional group classification with the following group of structural formulas.

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Compound $A$ was treated with a large excess of $CH_3MgBr$. The resulting product was exposed to $POCl_3$ /pyridine to give compound $B$,as one of many products.Which of the following compounds can be $A$ ?