Question: Allene can be converted to a trimer (compound A) of molecular formula C9H12. Compound A reacts with dimethyl acetylenedicarboxylate to give compound B. Deduce the

Allene can be converted to a trimer (compound A) of molecular formula C9H12. Compound A reacts with dimethyl acetylenedicarboxylate to give compound B. Deduce the structure of compound A.

0 0 COCH, 3CH,C-CH CHOCO-COOCH compound A H.C COCH Compound B

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