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Q. Ethylidene dibromide on heating with metallic sodium in ether solution produce

Rajasthan PMTRajasthan PMT 2003Hydrocarbons

Solution:

Ethylidene dibromide on heating with metallic sodium produce $2$-Butene.
$\underset{\text{Ethylidene dibromide}}{CH_3 - \underset{\overset{|}{B}r}{\overset{\underset{|}{B}r}{C}} - H + 4Na} + H - \underset{\overset{|}{B}r}{\overset{\underset{|}{B}r}{C}}-CH_3 \xrightarrow[\Delta]{\text{ether}}$
$\underset{\text{2 - Butene}}{CH_3 - CH = CH-CH_3} + 4NaBr$