How will you prepare ethyne from Zn in presence of alcohol.
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Overall transformation : C=C to 2C=O
Reagents : ozone, O3, followed by a reducing work-up, usually Zn in acetic acid.
It is convenient to view the process as cleaving the alkene into two carbonyls:
The substituents on the C=O depend on the substituents on the C=C.
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