作者:Shuki Araki、Nobuhito Katsumura、Yasuo Butsugan
DOI:10.1016/0022-328x(91)83277-b
日期:1991.9
sigmatropic rearrangement. Substituted quinones reacted with allylindium reagent giving excellent yields of allyquinols, whereas with prenylindium and geranylindium reagents, trisubstituted quinones gave diprenylcyclohexene-1,4-diones and 2,3-disubstituted quinones gave mixtures of prenylhydroquinones and diprenylcyclohexene-1,4-diones. In the prenylation of haloquinones, 1,2-addition, [3,3] sigmatropic rearrangement
研究了烯丙基倍半卤化物对各种醌的烯丙基化作用。未取代的p的反应苯甲酸醌与烯丙基,pre烯丙基和香叶菊醇试剂在用氧化银氧化后,以良好的收率得到相应的烯丙基化的醌。这些反应似乎是通过在γ-碳上添加1,2-烯丙基铟试剂然后进行[3,3]σ重排而进行的。取代的醌与烯丙基dium试剂反应可得到优异的烯丙基醇收率,而与戊炔醇和ger草醇dium试剂反应,三取代醌可生成二戊烯基环己烯-1,4-二酮,2,3-二取代醌可得到异戊二烯基氢醌和二戊烯基环己烯-1,4-二酮的混合物。在卤代醌的异戊烯基化中,依次产生1,2-加成,[3,3]σ重排和消除铟(III)卤化物,生成异戊烯基醌。2-羟基和2-甲氧基-1,