Preparation and alkylation of regioisomeric tetrahydrophthalimide-substituted indolin-2(3<i>H</i>)-ones
作者:Gary M. Karp、Michael E. Condon
DOI:10.1002/jhet.5570310639
日期:1994.11
A series of novel regioisomeric tetrahydrophthalimide-substituted indolin-2-ones has been prepared via the Sommelet-Hauser type cyclization of appropriately substituted anilines as potential herbicides. The resultant indolin-2-ones were then regioselectively alkylated at N-1 and C-3 to give 1,3,3-trisubstituted indolin-2-ones. The most active series was also prepared by the bis-nitration of m-fluorophenylacetic
已经通过适当取代的苯胺作为潜在除草剂的Sommelet-Hauser型环化反应制备了一系列新颖的区域异构的四氢邻苯二甲酰亚胺取代的吲哚-2-酮。然后将所得的吲哚-2-酮在N-1和C-3区域选择性烷基化,得到1,3,3-三取代的吲哚-2-酮。还制备了最活跃的系列由二的-nitration米-fluorophenylacetic酸接着还原和环化,得到6-氨基-5-氟二氢-2-酮。精制四氢邻苯二甲酰亚胺取代的吲哚-2-酮,然后进行C-和N-烷基化,得到所需化合物。