Tandem Oxidative Ring Expansion for Synthesis of Dibenzocyclooctaphenanthrenes
作者:Lu Yang、Hidenori Matsuyama、Sheng Zhang、Masahiro Terada、Tienan Jin
DOI:10.1021/acs.orglett.0c01725
日期:2020.7.2
A novel tandem single-electron oxidative ring expansion reaction has been developed for the construction of the saddle-shaped polycyclic arenes fused with cyclooctatetraene, that is, dibenzo[3,4:7,8]cycloocta[1,2-l]phenanthrenes (dbCOTPs). The combination of Cu(OTf)2 catalyst with DDQ triggered the selective oxidation of o-biphenyl-tethered methylenecirculenes fused with a seven-membered ring, giving
已经开发了一种新颖的串联单电子氧化环扩环反应,用于构建与环辛酸酯,即二苯并[3,4:7,8]环辛[1,2- l ]菲( dbCOTP)。Cu(OTf)2催化剂与DDQ的结合触发了与七元环稠合的邻联苯系留亚甲基环的选择性氧化,从而形成了相应的八元环稠合的dbCOTP。当前的七元环到八元环的串联扩环是通过亚苄基部分的选择性单电子氧化,分子内螺环化和1,2-芳基迁移序列发生的。
PROCESS FOR THE PREPARATION OF ASENAPINE AND INTERMEDIATE PRODUCTS USED IN SAID PROCESS
申请人:Kemperman Gerardus Johannes
公开号:US20080009619A1
公开(公告)日:2008-01-10
The invention relates to a novel process for the preparation of asenapine, i.e. trans-5-chloro-2-methyl-2,3,3a,12b-tetrahydro-1H-dibenz[2,3:6,7]oxepino[4,5-c]pyrrole, as well as to novel intermediate products for use in said process.
Process for the Preparation of Asenapine and Intermediate Products Used in Said Process
申请人:Kemperman Gerardus Johannes
公开号:US20100234618A1
公开(公告)日:2010-09-16
The invention relates to a novel process for the preparation of asenapine, i.e. trans-5-chloro-2-methyl-2,3,3a,12b-tetrahydro-1H-dibenz[2,3:6,7]oxepino[4,5-c]pyrrole, as well as to novel intermediate products for use in said process.