Process for the preparation of 6,6- dibromopenicillanic acid...

Details Process for the preparation of 6,6- dibromopenicillanic acid... Process for the preparation of 6,6- dibromopenicillanic acid...

C - Chemistry, Metallurgy

07

D

260/111

C07D 499/04 (2006.01) C07D 499/00 (2006.01)

Patent

CA 1233171

A B S T R A C T The invention relates to a process for the preparation of 6,6-dibromopenicillanic acid 1,1-dioxide by reaction of 6-beta-aminopenicillanic acid 1,1-dioxide with a nitrosating agent in the presence of an inorganic or strong organic acid and bromine. The invention is characterized in that the reaction is performed in the presence of an alcohol.

465598

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