C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
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] .
Awano Katsuya
Kinoshita Susumu
Maeda Toshio
Murakami Koji
Nomura Masahiro
Borden Ladner Gervais Llp
Kyorin Pharmaceutical Co. Ltd.
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