Chiral <i>N</i>-Heterocyclic Carbene−Pd(0)-Catalyzed Asymmetric Diamination of Conjugated Dienes and Triene
作者:Liang Xu、Yian Shi
DOI:10.1021/jo702167u
日期:2008.1.1
Studies show that a variety of conjugated dienes and triene can be enantioselectively diaminated using di-tert-butyldiaziridinone as nitrogen source and chiral N-heterocyclic carbene−Pd(0) complex as catalyst in good enantioselectivity (62−91% ee) with high regio- and diastereoselectivity.
Catalytic Asymmetric Diamination of Conjugated Dienes and Triene
作者:Haifeng Du、Weicheng Yuan、Baoguo Zhao、Yian Shi
DOI:10.1021/ja074698t
日期:2007.9.1
This paper describes a catalytic asymmetric diamination process using di-tert-butyldiaziridinone as nitrogen source with catalyst generated from Pd2(dba)3 and chiral phosphorus amidite ligand. A wide variety of conjugated dienes and triene can be effectively diaminated in good yields with high regio-, diastereo-, and enantioselectivities.
A Pd(0)-Catalyzed Diamination of Terminal Olefins at Allylic and Homoallylic Carbons via Formal C−H Activation under Solvent-Free Conditions
作者:Haifeng Du、Weicheng Yuan、Baoguo Zhao、Yian Shi
DOI:10.1021/ja072080d
日期:2007.6.1
This paper describes a novel diamination process of terminalolefins at allylic and homoallylic carbons via formal C−H activation using di-tert-butyldiaziridinone as nitrogen source and Pd(PPh3)4 as catalyst. A wide variety of terminalolefins can be effectively diaminated in good yields with high stereoselectivity.
A Facile Pd(0)-Catalyzed Regio- and Stereoselective Diamination of Conjugated Dienes and Trienes
作者:Haifeng Du、Baoguo Zhao、Yian Shi
DOI:10.1021/ja0680562
日期:2007.1.1
This paper describes a novel diamination process using di-t-butyldiaziridinone as the nitrogen source and Pd(PPh3)4 as catalyst. A wide variety of conjugated dienes and trienes can be effectively diaminated in good yields with high regio- and stereoselectivities in short reaction time.