HARDMCQ SINGLEIChO (Chemistry Olympiad)Organic ChemistryHydrocarbonsAchiever Section

Reduction of 2-butyne with sodium in liquid ammonia gives predominantly :

A.cis- 2- Butene

B.No reaction

C.trans - 2- Butene✓ Correct

D.n-Butane

Explanation

Reduction of alkynes with Na/lig.NH₃ gives trans- alkenes. This reaction is called Birch reduction

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