Identify the alkyne in the following sequence of reactions, Alkyne xrightarrow[ textLindlar's catalyst]H2 A xrightarrow textOzonolysis B only xleftarrow[ textProcess] textWacker CH2 = CH2

Question

Identify the alkyne in the following sequence of reactions, Alkyne xrightarrow[ textLindlar's catalyst]H2 A xrightarrow textOzonolysis B only xleftarrow[ textProcess] textWacker CH2 = CH2 (A) H3C-C ≡ C-CH3  (B)  H3C-CH2-C ≡ CH (C) H2C = CH - C ≡ CH  (D)  HC = C - CH2- C ≡ CH

Tardigrade Admin · Accepted Answer

In Wacker process, alkene is oxidised into aldehyde.

C H_{2} = C H_{2} + \frac{1}{2} P d C l_{2} C u Cl H_{2} O C H_{3} C H O

Since on ozonolysis, only alkenes produce aldehydes, '

A

' must be an alkene. To decide the structure of alkene that undergoes ozonolysis, bring the products together in such a way that

O

atoms are face to face and, replace

O

by double (=) bond. Thus,

Q. Identify the alkyne in the following sequence of reactions,
Alkyne $H_{2} Lindlar’s catalyst A Ozonolysis B o n l y Wacker Process C H_{2} = C H_{2}$

$H_{3} C - C \equiv C - C H_{3}$

$H_{3} C - C H_{2} - C \equiv C H$

$H_{2} C = C H - C \equiv C H$

$H C = C - C H_{2} - C \equiv C H$

Q. Identify the alkyne in the following sequence of reactions, Alkyne H2​Lindlar’s catalyst​AOzonolysis​BonlyWackerProcess​CH2​=CH2​

H3​C−C≡C−CH3​

H3​C−CH2​−C≡CH

H2​C=CH−C≡CH

HC=C−CH2​−C≡CH

Q. Identify the alkyne in the following sequence of reactions,
Alkyne $H_{2} Lindlar’s catalyst A Ozonolysis B o n l y Wacker Process C H_{2} = C H_{2}$

$H_{3} C - C \equiv C - C H_{3}$

$H_{3} C - C H_{2} - C \equiv C H$

$H_{2} C = C H - C \equiv C H$

$H C = C - C H_{2} - C \equiv C H$