Friedel–Crafts Alkylation of Indoles with <i>p</i>-Quinols: The Role of Hydrogen Bonding of Water for the Desymmetrization of the Cyclohexadienone System
作者:Carolina García-García、Laura Ortiz-Rojano、Susana Álvarez、Rosana Álvarez、María Ribagorda、M. Carmen Carreño
DOI:10.1021/acs.orglett.6b00781
日期:2016.5.6
Lewisacidcatalyzed Friedel–Crafts alkylation of indoles has been achieved in high yields and selectivities using p-quinols as electrophiles. (S)-Binol-3,3′-(9-anthracenyl)-phosphoric acid was able to catalyze the enantioselective formation of 5-(3-indole)-2-cyclohexenone derivatives. Experimental results and theoretical calculations explained the enantioselectivity based on a transition state where