Nickel-Catalyzed Alkylation or Reduction of Allylic Alcohols with Alkyl Grignard Reagents
作者:Bo Yang、Zhong-Xia Wang
DOI:10.1021/acs.joc.0c00008
日期:2020.4.3
selective alkylation and reduction of allylicalcohols with alkyl Grignard reagents were performed. The reaction using Ni(dppe)Cl2 as the catalyst resulted in the cross-coupling of allylicalcohols with primary alkyl Grignard reagents and cyclopropylmagnesium bromide. The reaction catalyzed by the combination of Ni(PCy3)2Cl2 and dcype led to the reduction of allylicalcohols. Secondary alkyl Grignard
Tetrahydroindole Derivatives for Treatment of Alzheimer's Disease
申请人:Burkamp Frank
公开号:US20100016308A1
公开(公告)日:2010-01-21
Tetrahydroindole derivatives of formula (I): are disclosed. These compounds modulate the activity of gamma-secretase and hence find use in treatment or prevention of Alzheimer's disease.
Here, we report a catalytic methodology for the enantioselectivesynthesis of α-chiral 1,3-difunctionalized BCPs from a three-component coupling of [1.1.1]propellane, a Grignard reagent, and an allylic phosphate. The reaction proceeds via the addition of the Grignard reagent to [1.1.1]propellane followed by an asymmetric N-heterocyclic carbene (NHC)-catalyzed allylicsubstitution of the resulting BCP–Grignard