1.
RSC Adv
; 8(4): 2157-2160, 2018 Jan 05.
Artículo
en Inglés
| MEDLINE
| ID: mdl-35542601
RESUMEN
Chiral phase transfer catalysts of dimeric cinchona ammonium salts linked with a benzophenone bridge showed high enantioselectivity in the α-alkylation of a glycinate ester under mild industry-applicable conditions: 0.5 mol% PTC and near equivalents of alkyl halide. A dual function of the dimeric quinuclidiniums was proposed for the high efficiency.