Indium Trihalide Mediated Regioselective Ring Opening of Aziridines: A Facile Synthesis of 2-Haloamines
作者:J. S. Yadav、B. V. Subba Reddy、G. Mahesh Kumar
DOI:10.1055/s-2001-16775
日期:——
A variety of N-tosyl aziridines undergo ringopening with indium trihalides in acetonitrile at ambient temperature to afford the corresponding haloamines in excellent yields with high regioselectivity.
A variety of N-tosylaziridines undergo regioselectiveringopening with tetrabutylammonium halides in the presence of β-cyclodextrin in water at pH 4 and room temperature to afford the corresponding haloamines in excellent yields.
Regioselective ring opening of aziridines with activated DMF complexes: a facile synthesis of β-haloamines
作者:Manoj K. Pandey、Alakesh Bisai、Vinod K. Singh
DOI:10.1016/j.tetlet.2004.10.161
日期:2004.12
A wide variety of aziridines were converted to the corresponding β-haloamines using activated DMF complexes in good to excellent yields with high regioselectivity.
We have developed a convenient and efficient iron-catalyzed aminobromination of the alkenes using inexpensive FeCl 2 as the catalyst, amides/sulfonamides and NBS as the nitrogen and bromine sources, respectively, undermildconditions.
Epoxides and aziridines undergo ring opening efficiently with (bromodimethyl)sulfonium bromide at room temperature to form the corresponding beta-bromohydrins and beta-bromoamines, respectively. The conversions are highly regioselective and afford the products in excellent yields within a short period of time. (c) 2006 Elsevier Ltd. All rights reserved.