Highly Regio- and Stereoselective Three-Component Nickel-Catalyzed syn-Hydrocarboxylation of Alkynes with Diethyl Zinc and Carbon Dioxide
作者:Suhua Li、Weiming Yuan、Shengming Ma
DOI:10.1002/anie.201007128
日期:2011.3.7
Hydrocarboxylation of alkynes: The first example of nickel‐catalyzed hydrozincation of alkynes that form stereodefined hydrocarboxylation products is presented (see scheme; cod=cycloocta‐1,5‐diene). This catalytic system is efficient for the activation of CO2 and the three‐component reaction produces products that could be converted into important oxindole or γ‐butyrolactam derivatives.
Bis(cycloocta-1,5-diene)nickel-Catalyzed Carbon Dioxide Fixation for the Stereoselective Synthesis of 3-Alkylidene-2-indolinones
作者:Bukeyan Miao、Yangguangyan Zheng、Penglin Wu、Suhua Li、Shengming Ma
DOI:10.1002/adsc.201700086
日期:2017.5.17
hydrocarboxylation of 2‐alkynylanilines under very mild conditions has been developed to afford (E)‐[2‐(o‐aminophenyl)]acrylic acids, which could easily be converted to (E)‐3‐alkylidene‐2‐indolinones with important potential bioactivity. The stereoselective syntheses of two biologically active molecules, (E)‐3‐benzylidene‐2‐indolinone (chemo‐preventive potential in inducing NQO1 activity) and (E)‐3‐(3‐m