Showing papers on "Annulation published in 1974"
52 citations
TL;DR: Protonated heterocycles possessing an alkyl substituent on the carbon atom adjacent to the positive nitrogen react with methyl vinyl ketone to form adducts which can be converted into fused pyridinium salts as mentioned in this paper.
Abstract: Protonated heterocycles possessing an alkyl substituent on the carbon atom adjacent to the positive nitrogen react with methyl vinyl ketone to form adducts which can be converted into fused pyridinium salts.
7 citations
6 citations