Tetrahedron

Azole additions upon azinium salts

…, M Guerrero, C Masdeu, MC Santano, C Minguillón…

Index: Lavilla, Rodolfo; Gotsens, Teresa; Guerrero, Marta; Masdeu, Carme; Santano, M. Carmen; Minguillon, Cristina; Bosch, Joan Tetrahedron, 1997 , vol. 53, # 40 p. 13959 - 13968

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Citation Number: 22

Abstract

The additions of pyrrole and indole upon N-acetyl-and N-alkylpyridinium, quinolinium or isoquinolinium salts are reported. The resulting dihydroazines are either isolated or oxidised to the more stable aromatic compounds. The use of a two-phase system was studied and slight enantiomeric excesses were observed when chiral catalysts were used. The separation of enantiomers of some 4-indolyl-1, 4-dihydropyridines was achieved by HPLC ...