A green metal-free “one-pot” microwave assisted synthesis of 1,4-dihydrochromene triazoles
作者:Tânia M. F. Alves、Guilherme A. M. Jardim、Marco A. B. Ferreira
DOI:10.1039/d1ra01169c
日期:——
The synthesis of several 4-aryl-1,4-dihydrochromene-triazoles was achieved via a metal-free “one-pot” procedure using PEG400 as the sole solvent in an eco-friendly process. Using microwave irradiation, the triazole derivatives were obtained in good yields and short reaction times starting from readily accessible building blocks.
The 1,3-dipolar cycloaddition of 2-aryl-3-nitrochromenes with various azomethine ylides has been investigated. The structure and stereochemistry of cycloadducts were studied in detail by NMR spectroscopic methods. (c) 2006 Elsevier Ltd. All rights reserved.
ARORA, P. K.;BHADURI, A. P., INDIAN J. CHEM., 1981, 20, N 11, 951-954