Polystyrene-supported TBD catalyzed ring-opening of N-tosylaziridines with silylated nucleophiles
作者:Satoru Matsukawa、Takeru Harada、Shiori Yasuda
DOI:10.1039/c2ob25435b
日期:——
Polystyrene-supported TBD (PS-TBD) catalyzes the ring-opening of N-tosylaziridines with silylated nucleophiles to give the corresponding products in high yields. PS-TBD was easily recovered and reused without significant loss of catalytic activity.
TBD-Catalyzed Ring Opening of Aziridines with Silylated Nucleophiles
作者:S. Matsukawa、H. Takahashi、T. Harada
DOI:10.1080/00397911.2011.601839
日期:2013.1
Abstract The ringopening of N-tosylaziridines with silylatednucleophiles catalyzed by 1,5,7-triazabicyclo[4,4,0]dec-5-ene (TBD) afforded the corresponding β-functionalized sulfonamides in excellent yields under mild reaction conditions. GRAPHICAL ABSTRACT
Do aziridines require Lewis acids for cleavage with ionic nucleophiles?
作者:Alakesh Bisai、Ghanshyam Pandey、Manoj K Pandey、Vinod K Singh
DOI:10.1016/s0040-4039(03)01414-x
日期:2003.7
variety of activatedaziridines were cleaved by sodium azide and sodium cyanide in aqueous acetonitrile at reflux, in the absence of any Lewisacid, to provide ring-opened products in quantitative yields. However, the reaction was sluggish in the ring opening of unactivated aziridines with sodium azide where the yields could be increased by adding 50 mol% CuCl2·2H2O. The reaction was used to synthesize
The ringopening of N-tosylaziridines with trimethylsilylated nucleophiles, catalyzed by N,N,N',N'-tetramethylethylenediamine, led to the production of beta-functionalized sulfonamides in good to excellent yields with high regioselectivity. [reaction: see text]
TTMPP: An efficient organocatalyst in the ring-opening of aziridines with silylated nucleophiles
作者:Satoru Matsukawa、Kumiko Tsukamoto
DOI:10.1039/b908322g
日期:——
The ring-opening of N-tosylaziridines with silylated nucleophiles catalyzed by tris(2,4,6-trimethoxyphenyl)phosphine (TTMPP) afforded the corresponding β-functionalized sulfonamides in excellent yield under mild reaction conditions.