Patent ID: 8691996

Claim:
A method for producing a halogenated picoline derivative represented by formula (3), the method comprising: a step B1 in which a compound represented by formula (2) and a halogenating agent are reacted in an organic solvent; and a step B2 in which a reaction product obtained in the step B1 is reduced, wherein R 1b represents an unsubstituted or substituent-containing alkoxycarbonyl group, R 2b represents an unsubstituted or substituent-containing alkoxycarbonyl group, an unsubstituted or substituent-containing acyl group, an unsubstituted or substituent-containing aryloxycarbonyl group, or an unsubstituted or substituent-containing heterocyclic oxycarbonyl group, Z represents a halogen atom, a cyano group, a nitro group, a hydroxyl group, a thiol group, a formyl group, a carboxyl group, an unsubstituted or substituent-containing amino group, an unsubstituted or substituent-containing alkyl group, an unsubstituted or substituent-containing alkenyl group, an unsubstituted or substituent-containing alkynyl group, an unsubstituted or substituent-containing aryl group, an unsubstituted or substituent-containing heterocyclic group, OR 3 , S(O) p R 3 , COR 3 or CO 2 R 3 (wherein R 3 represents an unsubstituted or substituent-containing amino group, an unsubstituted or substituent-containing alkyl group, an unsubstituted or substituent-containing alkenyl group, an unsubstituted or substituent-containing alkynyl group, an unsubstituted or substituent-containing aryl group, or an unsubstituted or substituent-containing heterocyclic group, and p represents a number of oxygen atoms in parentheses, and is an integer of 0 to 2), and m represents a number of Z substituents and is an integer of 0 to 3, and when m is 2 or more, a plurality of the Z substituents may be identical to, or different from, each other, wherein R 1b , R 2b , Z and m are as defined above, and X represents a halogen atom.