[3 + 2] Coupling of Quinone Monoacetals by Combined Acid–Hydrogen Bond Donor
作者:Toshifumi Dohi、Yinjun Hu、Tohru Kamitanaka、Naohiko Washimi、Yasuyuki Kita
DOI:10.1021/ol201886r
日期:2011.9.16
expeditious and efficient [3 + 2] coupling approach of quinonemonoacetals 1 with alkene nucleophiles 2 by the action of an activated Brønsted acid in the presence of a hydrogen bond donor perfluorinated alcohol has been achieved. With the optimized combined acid, the reaction could proceed under mild conditions by only mixing the two reactants to afford the cycloadducts 3 in a short time (within 10