Iminium-ion-mediated cyclizations of 4-aryl-1, 4-dihydropyridines. Regio-and stereoselectivity in intermolecular reactions

…, W Halczenko, JP Springer, J Hirshfield

文献索引：Hartman, George D.; Phillips, Brian T.; Halczenko, Wasyl; Springer, James P.; Hirshfield, Jordan Journal of Organic Chemistry, 1987 , vol. 52, # 6 p. 1136 - 1139

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被引用次数: 8

摘要

We have recently reported the generation of iminium ions from 4-aryl-1, 4-dihydropyridines and the intramolecular trapping of these electrophilic intermediates with carbon-carbon double bonds' and reactive heterocycle^.^,^ We have also noted other cyclization modes for 1, 4-dihydropyridines that either compete with iminium ion formation4 or utilize the iminium species at a secondary stage in the cy~ lization.~ We now report that the iminium ion ...