A Convenient Baylis-Hillman Synthesis of 3-Substituted 2<b><i>H</i></b>-1-Benzothiopyrans
作者:Perry Kaye、Xolani Nocanda
DOI:10.1055/s-2001-18704
日期:——
Reaction of 2,2"-dithiodibenzaldehyde 1 with activated alkenes 2a-g in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) affords, in one step, 3-substituted 2H-1-benzopyrans 6a-g in yields of up to 67%.
2,2"-二硫杂二苯甲醛1与活化烯烃2a-g在1,8-二氮杂双环[5.4.0]十一烯(DBU)存在下反应,能够一步合成3-取代的2H-1-苯并吡喃6a-g,产率最高可达67%。