Synthesis of planar chiral pseudo–ortho-substituted aryl[2.2]paracyclophanes by stepwise successive palladium-catalyzed coupling reactions
摘要:
Planar chiral aryl[2.2]paracyclophanyl-thioureas and -phosphine with a pseudo-ortho substitution pattern have been designed and efficiently synthesized by stepwise successive palladium-catalyzed crosscoupling reactions. (C) 2011 Elsevier Ltd. All rights reserved.
Synthesis of planar chiral pseudo–ortho-substituted aryl[2.2]paracyclophanes by stepwise successive palladium-catalyzed coupling reactions
摘要:
Planar chiral aryl[2.2]paracyclophanyl-thioureas and -phosphine with a pseudo-ortho substitution pattern have been designed and efficiently synthesized by stepwise successive palladium-catalyzed crosscoupling reactions. (C) 2011 Elsevier Ltd. All rights reserved.
Synthesis of new alkoxy/sulfonate-substituted carbene precursors derived from [2.2]paracyclophane and their application in the asymmetric arylation of aldehydes
作者:Wenzeng Duan、Yudao Ma、Bo Qu、Lei Zhao、Jianqiang Chen、Chun Song
DOI:10.1016/j.tetasy.2012.09.001
日期:2012.10
A series of novel planar chiral alkoxy/sulfonate-substituted carbene precursors have been designed and synthesized. They were used as N-heterocyclic carbene ligands in the Rh-catalyzed asymmetric addition of arylboronic acids to aromatic aldehydes, affording chiral diarylmethanols with high yields and moderate enantioselectivities. (C) 2012 Elsevier Ltd. All rights reserved.
Synthesis of planar chiral pseudo–ortho-substituted aryl[2.2]paracyclophanes by stepwise successive palladium-catalyzed coupling reactions
Planar chiral aryl[2.2]paracyclophanyl-thioureas and -phosphine with a pseudo-ortho substitution pattern have been designed and efficiently synthesized by stepwise successive palladium-catalyzed crosscoupling reactions. (C) 2011 Elsevier Ltd. All rights reserved.