C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/295, 260/291
C07D 213/55 (2006.01) C07D 213/16 (2006.01) C07D 405/06 (2006.01) C07F 7/10 (2006.01)
Patent
CA 1339610
An improved process for producing a substituted vinyl pyridine compound of the general formula: (see fig.I) wherein R1 is pyridyl group; R2 is an optionally substituted aromatic or heterocyclic group; R3 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-sulfonylamino- carbonyloxymethyl 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: (see fig.II) wherein R1 and R2 are as defined above, with a compound of the general formula: (see fig. III) wherein R3 is as defined above and X is a halogen atom, in a tertiary alcohol in the presence of a metallic hydride or a tertiary alkoxide of an alkali metal.
595477
Hatanaka Chitoshi
Nuwa Sigel
Oi Satoru
Fetherstonhaugh & Co.
Takeda Chemical Industries Ltd.
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