141811-44-1Relevant articles and documents
METHOD FOR PRODUCING CONDENSED-RING PYRIDINE COMPOUND
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Paragraph 0054, (2019/12/28)
PROBLEM TO BE SOLVED: To provide a novel method for producing a condensed-ring pyridine compound, useful as a precursor of a heterocyclic amide compound useful as a herbicide. SOLUTION: The present invention provides a method for producing a condensed-ring pyridine compound represented by the formula (1), characterized by cyclizing a pyridine compound represented by the formula (2), in the presence of at least one selected from the group consisting of phosphoryl chloride, phosphorus trichloride, phosphorus pentachloride, diphosphorus pentoxide, thionyl chloride and oxalyl chloride (where R and R1 independently represent a C1-3 alkyl group, n is an integer of 0, 1 or 2). SELECTED DRAWING: None COPYRIGHT: (C)2020,JPOandINPIT