Nitropyrazoles 15. Synthesis and some transformations of 1-(2, 4-dinitrophenyl)-4-methyl-3, 5-dinitropyrazole

…, VV Kachala, YV Nelyubina, SA Shevelev

Index: Zaitsev; Vatsadze; Dalinger; Kachala; Nelyubina; Shevelev Russian Chemical Bulletin, 2009 , vol. 58, # 10 p. 2109 - 2117

Full Text: HTML

Citation Number: 0

Abstract

Abstract The method for preparation of 1-(2, 4-dinitrophenyl)-4-methyl-3, 5-dinitropyrazole has been developed. Due to the larger CH-acidity of 4-Me-group compared to 1, 4-dimethyl- 3, 5-dinitropyrazole, 1-(2, 4-dinitrophenyl)-4-methyl-3, 5-dinitropyrazole is capable of reacting with substituted benzaldehydes to afford 4-[(E)-2-arylvinyl]-1-(2, 4-dinitrophenyl)-3, 5-dinitropyrazoles. Under the action of nucleophiles, dinitrophenyl group is detached from ...