Dongxin Zhang and Fujie Tanaka
RSC Adv., 2016,6, 61454-61457
DOI:
10.1039/C6RA13859D,
Communication
The development of oxa-hetero-Diels–Alder reactions of enones with aryl trifluoromethyl ketones to afford tetrahydropyranones bearing trifluoromethyl-substituted tetrasubstituted carbon centers is reported. The reactions were catalyzed by an amine-based catalyst system and afforded the products with er values up to 97 : 3.