Identify the reagents used for the following | vedclass

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

Question

(B) The given conversion involves two steps: $1$. The reduction of an alkyne to a cis-alkene. This is achieved using Lindlar's catalyst $(H_2/Pd-CaCO_

Vedclass · Accepted Answer

$H_2/Pd-CaCO_3, CHBr_3/NaOH$

Vedclass · Answer

(B) The given conversion involves two steps: $1$. The reduction of an alkyne to a cis-alkene. This is achieved using Lindlar's catalyst $(H_2/Pd-CaCO_3)$. $2$. The cyclopropanation of the alkene to form a dibromocyclopropane derivative. This is achieved by the addition of dibromocarbene $(:CBr_2)$,which is generated in situ from bromoform $(CHBr_3)$ and a strong base $(NaOH)$. Therefore,the correct sequence of reagents is $H_2/Pd-CaCO_3$ followed by $CHBr_3/NaOH$.

Identify the reagents used for the following conversion in the correct order.

Similar Questions

Arrange the following compounds in decreasing order of acidic character of $C-H$ bonds.
$CH_2=CH_2, CH_3-CH_3, C_6H_6, CH\equiv CH$

Which among the following statements is $NOT$ true about aliphatic compounds?

When glycerol is heated with $KHSO_4$,it gives:

Which one of the following is the intermediate in the preparation of a ketone by hydration of an alkyne in the presence of sulfuric acid and mercury $(II)$ sulphate?

Methylcyclopentane $\xrightarrow{Br_2/hv} \mathop{Major}\limits_{(X)}$ $\xrightarrow[KOH/\Delta]{Alcoholic} \mathop{Major}\limits_{(Y)}$ $\xrightarrow[Peroxide]{HBr} \mathop{Major}\limits_{(Z)}$
Major final product $(Z)$ is

Vedclass Test Series

Exam Paper Generator

Online Exam Module