General Ir-Catalyzed N–H Insertions of Diazomalonates into Aliphatic and Aromatic Amines
作者:Zhuang Zhong、Céline Besnard、Jérôme Lacour
DOI:10.1021/acs.orglett.3c03929
日期:2024.2.9
reactivity of acceptor–acceptor diazo malonate reagents is reported using [Ir(cod)Cl]2 as catalyst. A large range of amines, primary and secondary, aliphatic and aromatic, is possible. Mild temperatures, perfect substrate/reactant stoichiometry, and good functional group compatibility render the process particularly attractive for the (late-stage) functionalization of amines.
KOZIKOWSKI, ALAN P.;OKITA, MAKOTO;KOBAYASHI, MOTOMASA;FLOSS, HEINZ G., J. ORG. CHEM., 53,(1988) N 4, 863-869
作者:KOZIKOWSKI, ALAN P.、OKITA, MAKOTO、KOBAYASHI, MOTOMASA、FLOSS, HEINZ G.
DOI:——
日期:——
[EN] PROCESS FOR PREPARATION OF PAROXETIN INTERMEDIATE<br/>[FR] PROCEDE DE PREPARATION D'UN INTERMEDIAIRE DE PAROXETINE
申请人:SMITHKLINE BEECHAM PLC
公开号:WO2001014335A1
公开(公告)日:2001-03-01
A trans-piperidinedione of formula (1), where R is a benzyl group and R' is an optionally substituted C1-6-alkyl, aryl-C1-6-alkyl, C1-6-allyl or aryl group, which process comprises the reaction of a cinnamate ester of formula (3), where R'' has independently the same meaning as R', with a malonamide (4) in the presence of a strong base. Compound (2) is used in the presentation of paroxetine. The preparation of paroxetine by the route from compounds (3 and 4) avoids the formation of difficult to remove impurities found in other routes.