A modified Bischler-Napieralski procedure for the synthesis of 3-aryl-3,4-dihydroisoquinolines
摘要:
A modification of the Bischler-Napieralski reaction for the cyclization of (1,2-diphenylethyl)amides to the 3-aryl-3,4-dihydroisoquinolines is presented. Elimination of the amide group as the nitrile via the retro-Ritter reaction is avoided by its conversion to an N-acyliminium intermediate with oxalyl chloride-FeCl3. Removal of the oxalyl group in refluxing MeOH-sulfuric acid provides the 3,4-dihydroisoquinolines in moderate to high yields. The method is also highly effective with (2-phenylethyl)amides.
Dey; Ramanathan, Proceedings of the National Institute of Sciences of India, 1943, vol. 9, p. 193,222
作者:Dey、Ramanathan
DOI:——
日期:——
Nagubandi, Sreeramulu; Fodor, G., Journal of Heterocyclic Chemistry, 1980, vol. 17, p. 1457 - 1463
作者:Nagubandi, Sreeramulu、Fodor, G.
DOI:——
日期:——
Reversal of the ritter reaction as observed under electron impact conditions
作者:Sreeramulu Nagubandi
DOI:10.1002/oms.1210151010
日期:1980.10
AbstractFragmentations of various 2‐phenethylamides, trifluoroacylimidates and imidoyl trifluoromethyl sulfonates have been studied and a pathway for the formation of retro‐Ritter reaction products is proposed.
NAGUBANDI SREERAMULU; FODOR G., J. HETEROCYCL. CHEM., 1980, 17, NO 7, 1457-1463
作者:NAGUBANDI SREERAMULU、 FODOR G.
DOI:——
日期:——
PETROVIC, S. D.;STOJANOVIC, N. D.;VAJS, V. E.;KOBILAROV, N. L.;STOJANOVIC+, GLASI. XEM. DRUSH. BEOGRAD, 1984, 49, N 9, 537-544
作者:PETROVIC, S. D.、STOJANOVIC, N. D.、VAJS, V. E.、KOBILAROV, N. L.、STOJANOVIC+