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
Quadri‐Synergetic Effect for Highly Effective Carbon Dioxide Fixation and Its Application to Indoloquinolinone
作者:Suhua Li、Shengming Ma
DOI:10.1002/adsc.201200469
日期:2012.9.17
n–carboxylation of 2‐alkynylanilines with carbondioxide in the presence of dimethylzinc (ZnMe2) and cesium fluoride (CsF) for the effective synthesis of indolyl‐3‐carboxylic acids and indolodihydropyran‐2‐one is described. Through a mechanistic study, it is unveiled that the metal ions Cu2+, Zn2+, Cs+ and F− are working together for this CO2‐based highly efficient carboxylation.