Ultrasound assisted Diels-Alder reactions of 1-azadienes with “normal” electronic demand.
作者:Mercedes Villacampa、Jose' María Pérez、Carmen Avendaño、J.Carlos Menéndez
DOI:10.1016/s0040-4020(01)89620-4
日期:1994.1
irradiation accelerates hetero Diels-Alderreactions between 1-dimethylamino-1-azadienes and electron-defficient dienophiles. Besides the lower reaction times and increased yields, other advantages of the sonicated reactions are the possibility of isolating previously unknown adducts due to the milder reaction conditions and, in some cases, the decrease in side reactions.