Reductive Coupling of Phthalimides with Ketones and Aldehydes by Low-Valent Titanium: One-Pot Synthesis of Alkylideneisoindolin-1-ones
作者:Naoki Kise、Yusuke Kawano、Toshihiko Sakurai
DOI:10.1021/jo402125u
日期:2013.12.20
The reductivecoupling of phthalimides with ketones and aldehydes by Zn-TiCl4 in THF gave two- and four-electron reduced products, 3-hydroxy-3-(1-hydroxyalkyl)isoindolin-1-ones and alkylideneisoindolin-1-ones, selectively by controlling the reaction conditions. Therefore, the one-pot synthesis of alkylideneisoindolin-1-ones from phthalimides was effected by this reaction. Although the alkylideneisoindolin-1-ones
A series of Z-configured (hetero)aryl and alkylmethylideneisoindolin-1-ones has been efficiently prepared by treatment of N-methoxycarbonylisoindolin-1-ones with a base and reaction with selected aldehydes. The parent N-acylated isoindolin-1-ones have been assembled by a Parham-type cyclization of N-(2-iodoarylmethyl)dicarbamates.