Tetrahedron Letters p. 3145 - 3146 (1987)
Update date:2022-08-03
Topics:
Dinculescu, Antonie
Balaban, Teodor-Silviu
Balaban, Alexandru T.
β-N-Pyridinium acetaldehydes with alkyl substituents in the 2 and 6 positions of the pyridinium ring, obtained from the corresponding pyrylium salts, cyclise in alkaline medium to new indolizines.This high-yield reaction sequence is optimal for indolizines unsubstituted in the five membered ring which are difficultly accessible by other methods.
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