A simple procedure for the elaboration of carbonyl compounds into homologous alkynes

Abstract
The base-induced reaction of diazomethyltrimethylsilane (1) or of the dialkyl diazomethylphosphonates (4) and (5) with aromatic carbonyl compounds leads directly to the corresponding homologous alkynes. The mechanism, scope, and limitations of this synthetically useful process have been investigated.

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