Low-Valent Titanium Induced Reduction of Phthalimides and Coupling of Corresponding Isoindoles
作者:Jing Li、Jian Chen、Hai-bo Chen、Wei-xing Chen∗
DOI:10.1080/00397919808005970
日期:1998.4
Abstract A new method for the reduction of N-substituted phthalimides to the corresponding hydroxy lactams and the coupling of hydroxy lactams is described. We performed the reactions, which induced by low-valent titanium reagent in the aromatic solvent and in the absence of solvent for the first time.
and practical electrochemical method for selective reduction of cyclicimides has been developed using a simple undivided cell with carbon electrodes at room temperature. The reaction provides a useful strategy for the rapid synthesis of hydroxylactams and lactams in a controllable manner, which is tuned by electric current and reaction time, and exhibits broad substrate scope and high functional group
An oxidative desymmetrization of isoindolines was realized by TBN initiated radical sp3 C–H activation relay (CHAR), providing a series of ω-hydroxylactams in high yields. This reaction exhibits broad substrate scope and functional group tolerance, and even N-alkyl isoindolines can be well tolerated. The mechanistic study shows that the C–H bond oxidation, dioxygen trapping and intramolecular 1,5-H