Unprecedented Cobalt-Catalyzed Isomerization Reactions to Single Skipped 2,4,7-Trienes Applied in the Synthesis of Urushiol
作者:Anastasia Schmidt、Gerhard Hilt
DOI:10.1002/asia.201402323
日期:2014.9
The cobalt‐catalyzed isomerization of 1,3‐dienes to 2Z,4E‐dienes was realized for the very challenging substrates with an additional doublebond in the side chain. An isomerization to the conjugated 3,5,7‐triene derivative was not observed, which is in stark contrast to observations with many other isomerization catalysts. Accordingly, the synthesis of the natural product urushiol, which has a sensitive
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.