The hydrogenation on Raney nickel of 3-alkenyl-substituted pyrazolines and also of 3-methyl-5-(2-furyl)-1H-pyrazoline and 3,3'-bipyrazoline afforded substituted 1,3-diaminobutanes, 1,3-diaminopentanes, 1,3-diaminohexane, and 1,3,4,6-tetraaminohexane. Under the same conditions from 3-acetyl-4-(2-furyl)-1H-pyrazoline 3-amino-2-methyl-4-(2-furyl) pyrrolidine was obtained.
The hydrogenation on Raney nickel of 3-alkenyl-substituted pyrazolines and also of 3-methyl-5-(2-furyl)-1H-pyrazoline and 3,3'-bipyrazoline afforded substituted 1,3-diaminobutanes, 1,3-diaminopentanes, 1,3-diaminohexane, and 1,3,4,6-tetraaminohexane. Under the same conditions from 3-acetyl-4-(2-furyl)-1H-pyrazoline 3-amino-2-methyl-4-(2-furyl) pyrrolidine was obtained.
Reaction of 3-(alken-1-yl)-4,5-dihydro-3H-pyrazoles with sodium nitrite in acetic acid
作者:K. V. Yakovlev、M. D. Khanova、D. V. Petrov、S. P. Kuleshov、V. A. Dokichev
DOI:10.1134/s1070428013090182
日期:2013.9
3-Vinyl-4,5-dihydro-3H-pyrazole reacted with sodiumnitrite in aceticacid to give 3-vinyl-1-nitroso-4,5-dihydro-1H-pyrazole, whereas 3-isopropenyl-4,5-dihydro-3H-pyrazole under analogous conditions was unexpectedly converted into a nitro derivative, 3-(1-methyl-2-nitrovinyl)-4,5-dihydro-1H-pyrazole.