Abstract: An improved process for producing a substituted vinyl pyridine compound of the general formula: ##STR1## wherein R.sup.1 is pyridyl group; R.sup.2 is an optionally substituted aromatic or heterocyclic group; R.sup.3 is a lower alkyl group, hydroxymethyl group, nitroxymethyl group, a nitrogen containing 5 membered ring-methyl group, an acetal-methyl group, a trialkylsilyloxymethyl group, an alkyl- or aryl-sulfonyloxymethyl group, an alkyl- or aryl-sulfonylaminocarbonyloxymethyl group, an acyloxymethyl group, an alkoxycarbonyloxymethyl group, a halogenomethyl group, an alkoxymethyl group, an aryl-oxymethyl group, cyano group, an optionally substituted carbamoyl group, an optionally substituted carbamoyloxymethyl group, an optionally substituted thiocarbamoyloxymethyl group, carboxyl group or an alkoxycarbonyl group; and n is an integer of 1 to 22, which comprises reacting a compound of the general formula: ##STR2## wherein R.sup.1 and R.sup.2 are as defined above, with a compound of the general formula:(C.sub.