Dehydrogenation of 4-phenyl-substituted spinaceamine and spinacine
摘要:
The dehydrogenation of 4-phenyl-substituted spinaceamine and spinacine with elemental sulfur in dimethylformamide at 120-150 degrees C leads to the corresponding imidazo[4,5-c]pyridines. Sulfur may be regarded as a specific reagent for oxidative decarboxylation which accompanies dehydrogenation of 4-phenyl-substituted spinacine derivatives.
4-Phenyl derivatives of spinaceamine and spinacine undergo mild catalytic hydrogenation under atmospheric pressure with cleavage of the C-4-N-5 bond to give 5-benzyl-substituted histamines and histidines. The process is likely to be facilitated by the double benzylic effect on the C-N bond of the imidazole and benzene rings.
Synthesis of 6-aryl-4,5-dibenzamido-1,2,3,6-tetrahydropyridines
作者:Fred B. Stocker、April J. Evans
DOI:10.1021/jo00297a070
日期:1990.5
Yutilov, Yu. M.; Abramyants, M. G.; Smolyar, N. N., Russian Journal of Organic Chemistry, 1995, vol. 31, # 10, p. 1429 - 1430
作者:Yutilov, Yu. M.、Abramyants, M. G.、Smolyar, N. N.
DOI:——
日期:——
STOCKER, FRED B.;EVANS, APRIL J., J. ORG. CHEM., 55,(1990) N0, C. 3370-3373