Enantioselective Synthesis of Functionalized 4-Aryl Hydrocoumarins and 4-Aryl Hydroquinolin-2-ones via Intramolecular Vinylogous Rauhut–Currier Reaction of <i>para</i>-Quinone Methides
作者:Xiang-Zhi Zhang、Kang-Ji Gan、Xiao-Xue Liu、Yu-Hua Deng、Fang-Xin Wang、Ke-Yin Yu、Jing Zhang、Chun-An Fan
DOI:10.1021/acs.orglett.7b01331
日期:2017.6.16
A novel strategy for the asymmetric construction of functionalized 4-aryl-3,4-dihydrocoumarins and 4-aryl-3,4-dihydroquinolin-2-ones via an intramolecular vinylogous Rauhut–Currierreaction of para-quinone methides (p-QMs) under the bifunctional catalysis of chiral amine-phosphine is described. This intramolecular mode for the catalytic enantioselective 1,6-conjugate addition of p-QMs has been explored