Selective Access to Secondary Amines by a Highly Controlled Reductive Mono-N-Alkylation of Primary Amines
作者:Sukanta Bhattacharyya、Hephzibah J. Kumpaty、Erik W. Rehr、Amelia M. Gonzalez
DOI:10.1055/s-2003-41066
日期:——
A selective and direct access to secondary amines is reported by reductive mono-N-alkylation of primaryamines in the presence of Ti(i-PrO) 4 and NaBH 4 . Secondary amines are obtained exclusively from a set of carbonyl compounds and primaryamines, demonstrating high chemoselectivity toward reductive mono-N-alkylation.
2-(1,4-Benzodioxan-2-ylalkyl) imidazoles, their preparation and pharmaceutical compositions containing them
申请人:SYNTEX (U.S.A.) INC.
公开号:EP0047531A1
公开(公告)日:1982-03-17
2-(1,4-Benzodioxan-2-ylalkyl)imidazoles having the general formula:
wherein R', and R2 and R' are independently selected from the group consisting of hydrogen, and alkyl (1-6C), and wherein n is an integer equal to 0, 1 or 2, and the pharmaceutically acceptable acid addition salts thereof, are useful as affectors of the CNS, specifically as antidepressants, and are also useful as agents for the control of intraoccular pressure.