Process for producing benzylphthalazinone derivatives and...

Details Process for producing benzylphthalazinone derivatives and... Process for producing benzylphthalazinone derivatives and...

C - Chemistry, Metallurgy

07

D

C07D 403/04 (2006.01)

Patent

CA 2056334

A process for producing benzylphthalazinone derivatives represented by the general formula (I); (see fig. I) wherein X is a halogen atom and R' is a lower alkyl group, and salts thereof, which comprises reacting a compound represented by the general formula (II); (see fig. II) wherein X has the same meaning as mentioned above, or a salt thereof with a compound represented by the general formula (III); (see fig. III) wherein R1 has the same meaning as mentioned above or salt thereof in the presenoe of a dehydration-condensation agent. The benzylphthalazinone derivatives thereof are suitable for use as an antihistaminio agent.

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