Ullmann CO coupling of sterically hindered secondary alcohols using excess amount of strongly coordinating monodentate ligands
摘要:
A new effective copper catalyzed C-O coupling reaction using excess amount of strongly coordinating monodentate ligands was successfully developed. Among the DMAP-type monodentate ligands, 4-pyrrolidinopyridine afforded the best results. The developed reaction is widely applicable for the synthesis of various hindered or acyclic secondary alkyl-aryl ethers. In this study, a novel and remarkable acceleration of the coupling reaction using excess amount of monodentate ligands was discovered. (C) 2017 Elsevier Ltd. All rights reserved.
THIAZOLE DERIVATIVES AND COMBINATORIAL LIBRARIES THEREOF
申请人:LION bioscience AG
公开号:EP1150565A1
公开(公告)日:2001-11-07
US4304683A
申请人:——
公开号:US4304683A
公开(公告)日:1981-12-08
[EN] THIAZOLE DERIVATIVES AND COMBINATORIAL LIBRARIES THEREOF<br/>[FR] DERIVES DE THIAZOLE ET LEURS BANQUES COMBINATOIRES
申请人:TREGA BIOSCIENCES INC
公开号:WO2000045635A1
公开(公告)日:2000-08-10
The present invention relates to novel thiazole compounds of formula (I): wherein q, R1, R2, R3, R4, R5, R6, R7 and R8 have the meanings provided below. The invention further relates to combinatorial libraries containing at least two or more such compounds, and to methods of preparing combinatorial libraries composed of such compounds.