2
Question
Propyne is formed by heating 1,2-dibromopropane with :
Propyne is formed by heating 1,2-dibromopropane with :
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Solution
The correct option is B Alc. KOH and sodamide
1,2-dibromo propane is a vicinal halide since bomine attached to adjacent carbon atoms. Vicinal dihalides on treatment with alcoholic KOH undergo dehydrohalogenation to form alkenyl halide which on treatment with sodamide gives alkyne.
1,2-dibromo propane undergoes dehydrohalogenation to give 2-bromoprop-1-ene which on on further tratment with NaNH2 gives prop-1-yne.
1,2-dibromo propane is a vicinal halide since bomine attached to adjacent carbon atoms. Vicinal dihalides on treatment with alcoholic KOH undergo dehydrohalogenation to form alkenyl halide which on treatment with sodamide gives alkyne.
1,2-dibromo propane undergoes dehydrohalogenation to give 2-bromoprop-1-ene which on on further tratment with NaNH2 gives prop-1-yne.
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