Diels-Alder reactions of 2-bromo-2-cycloalkenones. A convenient approach to the doubly cisoid fully conjugated dienone system
作者:Hsing-Jang Liu、Kak-Shan Shia
DOI:10.1016/0040-4039(95)00151-2
日期:1995.3
Under stannic chloride catalysis, 2-bromo-2-cycloalkenones 1 and 2 were found to undergo Diels-Alder reaction with dienes to give adducts in high yields. Subsequent treatment of the adducts with 1,8-diazabicyclo[5.4.0]undec-7-ene gave the corresponding doubly cisoid fully conjugated dienones.
在氯化锡催化下,发现2-溴-2-环烯酮1和2与二烯发生Diels-Alder反应,以高收率得到加合物。随后用1,8-二氮杂双环[5.4.0]十一烷基-7-烯处理加合物,得到相应的双倍的cisoid完全共轭的二烯酮。