Enantiomerically pure pyridine and 2,2′-bipyridine thioethers: new N–S chiral ligands for asymmetric catalysis. Palladium-catalyzed allylic alkylation
作者:Giorgio Chelucci、Nicola Culeddu、Antonio Saba、Raffaela Valenti
DOI:10.1016/s0957-4166(99)00352-3
日期:1999.9
Diastereomeric pure pyridine and 2,2'-bipyridine thioethers, derived from (+)-camphor, were prepared and assessed in the enantioselective palladium-catalyzed allylic substitution of 1,3-diphenylprop-2-enyl acetate with dimethyl malonate. Enantioselectivities of up to 76% were obtained. (C) 1999 Elsevier Science Ltd. All rights reserved.