1.
Chem Pharm Bull (Tokyo)
; 67(9): 1019-1022, 2019.
Artículo
en Inglés
| MEDLINE
| ID: mdl-31474725
RESUMEN
A novel catalyst system-a combination of the readily available 2,2'-biphenol with the inexpensive, nontoxic, and eco-friendly B(OH)3-promoted the Nazarov cyclization of activated and inactivated divinyl ketones to afford the corresponding cyclopentenones up to 96% yield under, in a cis-selective manner. Compared with the conventional harsh conditions with hazardous reagents, user-friendly method was established with bench-stable and easy-to-handle reagents.