[3+2]-Cycloaddition reactions of 2-phenyliodonio-1,3-dioxacyclohexanemethylide: Facile synthesis of fused dihydrofuran derivatives
作者:Amalia Asouti、Lazaros P. Hadjiarapoglou
DOI:10.1016/s0040-4039(98)01997-2
日期:1998.12
Iodonium ylide 2, derived from 1,3-cyclohexadione, undergoes thermal [3+2]-cycloaddition with acetonitrile, carbon disulfide and p, p′-dimethoxythiobenzophenone with Cu(acac)2 catalysis to form the corresponding 5-membered heterocycles and alkene respectively. Photochemically 2 reacts with various alkenes and dienes to form dihydrofuran derivatives, key intermediates for paniculide A, B and pentalene
衍生自1,3-环己二酮的碘鎓碘化物2与乙腈,二硫化碳和p,p'-二甲氧基硫代二苯甲酮在Cu(acac)2催化下进行热[3 + 2]-环加成反应,形成相应的5元杂环和烯烃分别。光化学反应2与各种烯烃和二烯反应形成二氢呋喃衍生物,这是潘尼硫醚A,B和戊烯合成的关键中间体。