Various C–C and C‐X bonds could be formed by doublefunctionalization of olefins featuring Cu‐mediated assistedtandemcatalysis. Furthermore, one‐pot indoline syntheses with o‐bromostyrenes as an application could be achieved.
Indium Tribromide Catalyzed Highly Regioselective Ring Opening of Epoxides and Aziridines with Pyrrole
作者:J. S. Yadav、B. V. S. Reddy、G. Parimala
DOI:10.1055/s-2002-32575
日期:——
Pyrrole reacts smoothly with terminal epoxides in the presence of a catalytic amount of InBr3 under very mild conditions to afford the corresponding C-alkylated pyrroles in high yields. Similarly, activated aziridines also opened by pyrrole under the influence of indium tribromide to afford 2- and 3-alkyl pyrrole derivatives in high yields with high regioselectivity.
Sulphated zirconia is an efficient catalyst for the regioselective ring-opening of aryl-substituted aziridines. This heterogeneous catalyst can be used several times without loss of activity and is compatible with a variety of acid sensitive and slightly basic nucleophiles.
InCl3-catalyzed regioselective opening of aziridines with heteroaromatics
作者:J.S Yadav、B.V.S Reddy、Sunny Abraham、G Sabitha
DOI:10.1016/s0040-4039(02)00015-1
日期:2002.2
A variety of N-tosylaziridines undergo ring opening with pyrrole, furan, thiophene and indole in the presence of a catalytic amount of indium trichloride at ambient temperature to afford the corresponding beta-aminoheterocycles in good yields with high regioselectivity. (C) 2002 Elsevier Science Ltd. All rights reserved.
Yadav; Reddy; Parimala, Journal of Chemical Research - Part S, 2003, # 2, p. 78 - 81