Hydrocarbons - Result Question 49
####51. Predict the correct intermediate and product in the following reaction :
[2017]
$H_3 C-C \equiv CH \xrightarrow[HgSO_4]{H_2 O, H_2 SO_4} \underset{(A)}{\text{ Intermediate }} \to \underset{\text{ (B) }}{\text{ product }}$
(a) $A: H_3 C-\underset{\mid}{C}=CH, B: H_3 C-\underset{\mid}{C}=CH_2$
(b) $A: H_3 C-\underset{|}{C}=CH_3, B: H_3 C-C \equiv CH$
(c) $A: H_3 C-\underset{O}{C}=CH_2, B: H_3 C-\underset{|}{C}=CH_3$
(d) $A: H_3 C-\underset{SO_4}{C}=CH_2, B: H_3 C-C-CH_3$
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Solution:
- (c) Hydration of alkynes give ketones.
C=C(C)CCCC(C)=O
(B)
