Enantioselective Diels-Alder reaction of 1,2-dihydropyridines with aldehydes using β-amino alcohol organocatalyst
(Chemical Equation Presented) The enantioselective Diels-Alder reaction of 1,2-dihydropyridines with aldehydes using an easily prepared optically active β-amino alcohol catalyst was found to provide optically active isoquinuclidines, an efficient syntheti
SYNTHESIS OF SUBSTITUTED 3-PYRIDINECARBOXALDEHYDES
Treatment of 3-substituted 1-(phenoxycarbonyl)-1,2-dihydropyridines with Vilsmeier reagent (POCl3/DMF) gave 3-substituted 5-formyl-1-(phenoxycarbonyl)-1,2-dihydropyridines, which were aromatized with hot sulfur to provide 5-substituted 3-pyridinecarboxaldehydes. The formylation of 4-substituted 1-(phenoxycarbonyl)-1,4-dihydropyridines and subsequent aromatization gave 4-substituted 3-pyridinecarboxaldehydes.
Comins, Daniel L.,Herrick, James J.
p. 2159 - 2164
(2007/10/02)
Synthesis of 1-Acyl-1,4-dihydropyridines via Copper Hydride Reduction of 1-Acylpyridinium Salts
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Comins, Daniel L.,Abdullah, Abdul H.
p. 3392 - 3394
(2007/10/02)
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