Acetylenedicarbaldehyde: isolation and some examples of exclusive dienophilicity under neutral conditions

…, A Gorgues, A Belyasmine, A Le Coq

文献索引：Stephan, Dominique; Gorgues, Alain; Belyasmine, Ahmed; Coq, Andre Le Journal of the Chemical Society, Chemical Communications, 1988 , # 4 p. 263 - 264

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摘要

Acetylenedicarbaldehyde (1) is isolated in the pure state after acidolysis of its monoacetal (2) with an excess of formic acid followed by dehydration of residual HCO2H into CO with P2O5; under neutral conditions,(1) reacts with conjugated dienes as a dienophile only, in contrast to what occurs in acidic medium.