Tetrahedron

A new general and efficient synthesis of imidazo [4, 5-c] pyrazole derivatives

CB Vicentini, AC Veronese, P Giori, B Lumachi…

Index: Vicentini; Veronese; Giori; Lumachi; Guarneri Tetrahedron, 1990 ,  vol. 46,  # 16  p. 5777 - 5788

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Citation Number: 10

Abstract

A new general and efficient synthesis of imidazo[4,5-c]pyrazoles (5) is reported. The key step of this synthetic procedure is the intramolecular cyclodehydration of 5-alkylamino-4-nitrosopyrazoles (4), which affords the title compounds (5) in good yields. ... Tetrahedron Vol. 46, No. 16, pp. 5777-5788,1990 Printed in Great Britain 0040-4020^0 S3.00+.00 1990 Pergamon Press pic A NEW GENERAL AND EFFICIENT SYNTHESIS OF IMIDAZO[4,5-c]PYRAZOLE ...