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Improved Synthesis of Benzotriazoles and 1-Acylbenzotriazoles by Ultrasound Irradiation

2007; Bentham Science Publishers; Volume: 4; Issue: 1 Linguagem: Inglês

10.2174/157017807780037504

1875-6255

Cláudio M. P. Pereira, Hélio A. Stefani, Karla P. Guzen, Aline T. G. Orfao,

Synthesis of Tetrazole Derivatives

Some 1H-benzotriazoles have been synthesised in good yields in short times by reaction of ophenylenediamine with sodium nitrite in acetic acid under ultrasound irradiation. Also, the ultrasoundassisted preparation of 1-acylbenzotriazoles is described. Keywords: Benzotriazoles, acylbenzotriazoles, ultrasound irradiation, sonochemistry, heterocycles