N-benzyldioxothiazolidylbenzamide derivatives and process...

C - Chemistry – Metallurgy – 07 – C

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C07C 69/78 (2006.01) C07D 277/34 (2006.01)

Patent

CA 2417403

The invention of this divisional application relates a process for preparing a compound of the general formula (10) Image [wherein R3 represents lower alkoxy with 1 to 3 carbon atoms, hydroxyl or halogen, R5 represents lower alkyl with 1 to 3 carbon atoms, R6 represents lower alkyl with 1 to 3 carbon atoms, and X represents halogen], which process comprises converting a compound represented by a general formula (8) Image [wherein R3 and R5 are as defined above], to a diazonium salt in contact with a hydrogen halide, and then reacting the diazonium salt so obtained with a compound of the general formula (9) Image [wherein R6 is as defined above] .

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