Process for the preparation of substituted pyridines

Details Process for the preparation of substituted pyridines Process for the preparation of substituted pyridines

C - Chemistry, Metallurgy

07

D

C07D 401/04 (2006.01) C07D 401/14 (2006.01) C07D 405/14 (2006.01) C07D 409/14 (2006.01) C07D 413/14 (2006.01) C07D 417/14 (2006.01) C07D 473/00 (2006.01)

Patent

CA 2279796

The present invention is concerned with a novel process for the carbamoylation of substituted pyridines, especially with a process for the preparation of compounds of formula I (see formula I) wherein R4 to R8 represent hydrogen, lower-alkoxy or halogen; or optionally salts thereof.

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