Preparation of 6-alpha-bromo- and/or 6,6-dibromo-...

Details Preparation of 6-alpha-bromo- and/or 6,6-dibromo-... Preparation of 6-alpha-bromo- and/or 6,6-dibromo-...

C - Chemistry, Metallurgy

07

D

260/111, 260/118

C07D 499/00 (2006.01)

Patent

CA 1218055

A B S T R A C T Preparation of 6 alpha-bromo- and/or 6,6-dibromo-penicillanic acid 1,1-dioxides by diazotising a 6 bêta-amino-penicillanic acid 1,1-dioxide and subsequently brominating the diazotised compounds. The bromo-compounds prepared according to the invention are valuable intermediates because they can be debrominated to yield penicillanic acid 1,1-dioxide and derivatives thereof. The preparation of 6-diazo-penicillanic acid 1,1-dioxide and derivatives thereof is also disclosed as well as these new compounds as such.

426045

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