| http://www.w3.org/ns/prov#value | - The 1,2,3,5,6-pentasubstituted-4-(substituted phenyl)-1,2-dihydropyridines are prepared by reacting in an inert solvent such as ethanol, an aldehyde of formula (14): ##STR11## wherein R7 is a member selected from a group consisting of lower alkyl, low alkoxy, halogen, nitro and trifluoromethyl, with a lower alkyl acetoacetate of formula (15):
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