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US 4,540,793 AGranted
Substituted pyridines
AssigneeEthyl Corporation
InventorVenkataraman Ramachandran
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Abstract
4-(1-Chlorovinyl)pyridines are prepared by heating an acid salt of 4-(1,2-dichloroethyl)pyridine in an inert solvent until dehydrohalogenation is effected.
Claims5
A process which comprises heating a sulfuric, hydrochloric, hydrobromic, hydrofluoric, hydroborofluoric, methanesulfonic, acetic, chloroacetic, or dichloroacetic salt of 4-(1,2-dichloroethyl)pyridine in an inert solvent selected from N,N-dimethylformamide, N,N-dimethylacetamide, and tetraethylurea to dehydrohalogenate it to a 4-chlorovinyl)pyridine.
Dependencies are inferred from the claim text.