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

GD Hartman, BT Phillips, W Halczenko…

Index: Journal of Organic Chemistry, , vol. 54, # 17 p. 4134 - 4137

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Citation Number: 3

Abstract

... The olefin, therefore, had the regio- and stereo- chemistry shown in 7. In addition, the olefinic protons ... The combined organic extracts were dried and concentrated and the residue was purified by flash chromatography ... 3.51 (3 H, s, CHSd or CH34, 3.55 (1 H, d, J = 7 Hz, He), 3.68 ...