Pyridine Syntheses. II. Condensation Rou
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J. Michael Robinson; Masood Ahmed; Nicky J. Alaniz; Timothy R. Boyles; Chris D.
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Article
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1998
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Journal of Heterocyclic Chemistry
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English
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Alternative complimentary syntheses of penta-substituted pyridine rings with full regiochemical control of substituents were studied as a method for the synthesis of Streptonigrin (1). Various \(\alpha\)-substituted acetophenones 2 were reacted with enones 3 in acetic acid/ammonium acetate and air t