作者:GORGUES, A.、SIMON, A.、LE, COQ, A.、HERCOUET, A.、CORRE, F.
DOI:——
日期:——
Versatilite de reactivite de l`acetylene dicarbaldehyde et des aldehydes α-acetyleniques a l'egard des dienes conjugues cycliques et heterocycliques en milieu acide
作者:A. Gorgues、A. Simon、A. Le Coq、A. Hercouet、F. Corre
DOI:10.1016/s0040-4020(01)87436-6
日期:1986.1
of acetylenedicarbaldehyde and the corresponding mono acetal is described. A comparison of their reactivity with other α-acetylenic aldehydes R-CC-CHO to towards conjugated cydic or hetero- cydic dienes is presented. Under neutral conditions, the only expected Diels-Alder adducts are formed. Under acidic conditions (HCO2H, CF3,CO2H or eventually AcOH) they afford the only Diel-Alder adduct when the