Method for preparing oxime derivative

A method for preparing an oxime derivative, the method comprising:

• preparing a second compound represented by the following Chemical Formula 2 from a first compound represented by the following Chemical Formula 1,
• wherein the preparing of a second compound uses a Ni-based catalyst represented by the following Chemical Formula 3:
• in Chemical Formula 1 to Chemical Formula 3,
• R1 and R2 are each independently hydrogen;
• an alkyl group having 1 to 6 carbon atoms;
• an alkyl group having 1 to 3 carbon atoms substituted with an unsubstituted or substituted aryl group having 6 to 30 carbon atoms;
• or an unsubstituted or substituted aryl group having 6 to 30 carbon atoms;
• or
• R1 and R2 are linked to each other to form an alicyclic ring having 5 to 12 carbon atoms;
• or an alicyclic ring having 5 to 12 carbon atoms to which an aromatic ring having 6 to 30 carbon atoms bonds;
• and
• X1 and X2 are each independently F;
• Cl;
• Br;
• or I;
• in Chemical Formula 3, iPr represents an iso-propyl group or related substituent;
• and
• in the substituted aryl group having 6 to 30 carbon atoms, the substituent is F;
• Cl;
• Br;
• I;
• an alkyl group having 1 to 3 carbon atoms unsubstituted or substituted with at least one of F, Cl, Br and I;
• an alkoxy group having 1 to 3 carbon atoms unsubstituted or substituted with at least one of F, Cl, Br and I;
• or —CO2Ra, and Ra is an alkyl group having 1 to 3 carbon atoms.