Iridium-Catalyzed Enantioselective Allyl–Allyl Cross-Coupling of Racemic Allylic Alcohols with Allylboronates
作者:Yu Zheng、Bei-Bei Yue、Kun Wei、Yu-Rong Yang
DOI:10.1021/acs.orglett.8b03627
日期:2018.12.21
catalytic system that allows asymmetric allyl–allylboronate cross-coupling with high enantioselectivity is reported. This transformation tolerates a large variety of racemic branched allylicalcohols and allylboronate substrates. The utility of the coupling is demonstrated in a concise catalytic asymmetric synthesis of (−)-preclamol.
作者:James Y. Hamilton、Nicole Hauser、David Sarlah、Erick M. Carreira
DOI:10.1002/anie.201406077
日期:2014.9.26
enantioselective allyl–allylsilane cross‐coupling involving racemic branched allylic alcohols and allylsilanes is reported. An iridium‐(P,olefin) phosphoramidite complex enables the transformation with high regio‐ and stereoselectivity under operationally simple conditions. The utility of the coupling is demonstrated in a concise catalytic, enantioselective synthesis of a pyrethroid insecticide protrifenbute
A regioselectivity switch in Pd-catalyzed hydroallylation of alkynes
作者:Ding-Wei Ji、Yan-Cheng Hu、Hao Zheng、Chao-Yang Zhao、Qing-An Chen、Vy M. Dong
DOI:10.1039/c9sc01527b
日期:——
Through rational evaluation of ligands and promoters, the reactivity of a key Pd(ii) species towards transmetalation or β-H elimination is manipulated.