Cyclization of 1,2,4-triazenes to 1,2,4-triazoles using oxidizing reagents—NaClO, Ca(ClO)2, Dess–Martin periodinane and Ley's TPAP/NMO
作者:K Paulvannan、Ron Hale、Daniel Sedehi、Tao Chen
DOI:10.1016/s0040-4020(01)00976-0
日期:2001.11
A simple and efficient approach to 1,3,5-trisubstituted 1,2,4-triazoles via cyclization of 1,2,4-triazenes employing commonly used oxidizing agents such as NaClO, Ca(ClO)(2), Dess-Martin periodinane and Ley's oxidizing agent (TPAP/NMO) is described. The reaction proceeds under mild conditions and is compatible with various functional groups. Extension of this approach to prepare triazoles on solid support has also been investigated. (C) 2001 Elsevier Science Ltd. All rights reserved.