Patent ID: 7307165

Claim:
A process for producing a compound represented by the formula (II): wherein X represents a halogen group or an optionally halogenated lower alkyl group, Y represents a hydrogen or SO 2 N═CH—NR 1 R 2 wherein R 1 and R 2 each represent a lower alkyl group, or R 1 and R 2 may be combined together with the adjacent nitrogen atom to form a heterocyclic ring, and R represents a lower alkyl group, lower cycloalkyl group which may be substituted with lower alkyl, lower alkenyl group or lower alkynyl group, which comprises reacting an imidazo[1,2-b]pyridazine compound represented by the formula (I): wherein X and Y are as defined above, and Z represents a halogen atom or OSO 2 R 3 (wherein R 3 represents an optionally fluorinated lower alkyl group or phenyl group which may be substituted with lower alkyl), with one or more compounds selected from the organometallic compounds represented by the formula: wherein R is as defined above, and M 1 represents a univalent metal, M 2 represents a divalent metal, M 3 represents a trivalent metal and M 4 represents a tetravalent metal, and L, L′ and L″ are the same or different and represent an anion, under the presence of a transition metal catalyst.