作者:G. A. Gazieva、N. G. Kolotyrkina、A. N. Kravchenko、N. N. Makhova
DOI:10.1007/s11172-014-0449-2
日期:2014.2
Diastereoselective [3+2] cycloaddition of azomethine ylide to 1,3-dimethyl-6-(2-oxo-1,2-dihydro-3H-indol-3-ylidene)-3a,9a-diphenyl-3,3a,9,9a-tetrahydroimidazo[4,5-e]thiazolo[3,2-b]-[1,2,4]triazine-2,7(1H,6H)-dione yields hitherto unknown 1,1′,3-trimethyl-3a,9a-diphenyl-3,3a,9,9a-tetrahydrodispiro(imidazo[4,5-e]thiazolo[3,2-b][1,2,4]triazine-6,3′-pyrrolidine-4′,3″-indole)-2,2″,7(1H,1″H)-triones.
偶氮甲碱叶立德的非对映选择性 [3+2] 环加成反应生成 1,3-二甲基-6-(2-oxo-1,2-dihydro-3H-indol-3-ylidene)-3a,9a-diphenyl-3,3a,9 ,9a-四氢咪唑并[4,5-e]噻唑并[3,2-b]-[1,2,4]三嗪-2,7(1H,6H)-二酮产生迄今未知的1,1',3-三甲基-3a,9a-diphenyl-3,3a,9,9a-tetrahydrodispiro(imidazo[4,5-e]thiazolo[3,2-b][1,2,4]triazine-6,3'-pyrrolidine-4 ′,3″-吲哚)-2,2″,7(1H,1″H)-三酮。