Enantioselective Direct α-Arylation of Pyrazol-5-ones with 2-Indolylmethanols via Organo-Metal Cooperative Catalysis
作者:Zi-Qi Zhu、Yang Shen、Jin-Xi Liu、Ji-Yu Tao、Feng Shi
DOI:10.1021/acs.orglett.7b00351
日期:2017.4.7
The first catalytic asymmetric α-arylation of pyrazol-5-ones has been established by using 2-indolylmethanols as direct electrophilicarylation reagents under the cooperative catalysis of Pd(0) and a chiral phosphoric acid, which afforded the α-arylation products of pyrazol-5-ones in generally high yields and good enantioselectivities (up to 99% yield, >99% ee).