The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 25, 1990
Filed:
Apr. 04, 1989
Takeda Chemical Industries, Ltd., Osaka, JP;
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: