Tetrahedron

Novel applications of the modified polonovski reaction-IX: A new route to wenkert's enamine

M Lounasmaa, E Karvinen, A Koskinen, R Jokela

Index: Lounasmaa, Mauri; Karvinen, Esko; Koskinen, Ari; Jokela, Reija Tetrahedron, 1987 , vol. 43, # 9 p. 2135 - 2146

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Citation Number: 22

Abstract

A practical synthetic entry to Wenkert's enamine 1 employing the modified Polonovski reaction is described. Complete 13C NMR spectral data of 1 is presented. Conformational analysis of the intermediate 1-hydroxy-and 1-ethyl-1-hydroxy-indoloquinolizidines 20a, 20b, 21a and 21b based on simple but reliable 13C NMR spectral correlations is presented.