Davies Huw. M. L., Clark T. Jeffrey, Tetrahedron, 50 (1994) N 33, S 9883-9892
作者:Davies Huw. M. L., Clark T. Jeffrey
DOI:——
日期:——
[6 + 4] and [4 + 2] Cycloaddition Reactions of Cobaloxime 1,3-Dienyl Complexes and Tropones
作者:Ramakrishna R. Pidaparthi、Mark E. Welker、Cynthia S. Day
DOI:10.1021/om050983e
日期:2006.2.1
to participate in cycloaddition reactions with a variety of tropones. In general, tropones that do not contain electron-withdrawing substituents react with dienyl complexes via [6 + 4] cycloaddition and tropones that are substituted with at least one additional electron-withdrawing group react via [4 + 2] cycloaddition. Both types of metal-substituted cycloadducts ([6 + 4] and [4 + 2]) presented here
Synthesis of highly functionalized tropolones by rhodium(II)-catalyzed reactions of vinyldiazomethanes with oxygenated dienes
作者:Huw M.L. Davies、T. Jeffrey Clark
DOI:10.1016/s0040-4020(01)89604-6
日期:1994.1
catalyzed decomposition of vinyldiazomethanes to vinylcarbenoids in the presence of oxygenateddienes leads to the regioselective synthesis of cycloheptadienes by a tandem cyclopropanation/Cope rearrangement. The resulting cycloheptadienes are readily hydrolyzed and oxidized, leading to a very direct and general synthesis of highly functionalized tropolones.