Provided is an improved synthesis of quetiapine and pharmaceutically acceptable salts.
提供了喹硫平和药用可接受盐的改进合成方法。
New method for the preparation of dibenzo[b, f][1,4]thiazepines
作者:Takayoshi Fujii、Wei Hao、Toshiaki Yoshimura
DOI:10.1002/hc.20010
日期:——
The S-amination of 9H-thioxanthen-9-ol (2a) and 9-substitutedderivatives 2b–e (Me (b), Et (c), iPr (d), Ph (e)) with O-mesitylenesulfonylhydroxylamine (MSH) was carried out. The expected product, 10-amino-9-hydroxy-9-isopropyl-9H-thioxanthenium mesitylenesulfonate (3d), was obtained in 78(%) yield from the corresponding thioxanthen(9)-ol 2d. However, in the case of 2a–c and 2e the reaction led instead
Palladium-catalyzed asymmetric hydrogenation of dibenzo[b,f][1,4]thiazepines activated by Brønsted acid
作者:Jinzhu Wang
DOI:10.1016/j.tetlet.2013.08.068
日期:2013.11
An efficient and facile route to chiral dihydrodibenzothiazepines has been successfully developed via palladium-catalyzedasymmetrichydrogenation of the dibenzothiazepines with Brønstedacid as activator with up to 94% ee.
Iron catalyzed cross-coupling reactions of imidoyl derivatives
申请人:Olsson Roger
公开号:US20070106074A1
公开(公告)日:2007-05-10
Disclosed is a process for preparing a compound of formula A-N═C(D)(B), from a compound of formula A-N═C(E)(B) and a compound of formula D-M using an iron catalyst, where the process has is represented by Equation (I)
Late-Stage Two-Step C11─H Arylation of Dibenzooxa/thiazepines
作者:Yang Chen、Mengyao Ma、Hongguang Du、Jiaxi Xu、Zhanhui Yang
DOI:10.1055/a-2038-2323
日期:——
A practical and efficientsynthesis of 11-aryldibenzooxa/thiazepines is achieved, via a late-stage and two-step C11–H arylation of simple dibenzooxa/thiazepines. The adoption of Grignard addition and DDQ dehydrogenation allows for operationally simple and chemically reliable, step-efficient, and high-yielding transformations. The two-step and one-pot procedures provide excellent yields. The gram-scale