Preparation of 6 alpha-bromo- and/or 6,6-dibromo- penicillanic acid 1,1-dioxides by diazotising a 6 beta-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 aicd 1,1-dioxide and derivatives thereof is also disclosed as well as these new compounds as such.
通过重氮化 6 β-
氨基青霉烷酸 1,1-二氧化物,然后
溴化重氮化化合物,制备 6 α-
溴青霉烷酸 1,1-二氧化物和/或
6,6-二溴青霉烷酸 1,1-二氧化物。根据本发明制备的
溴化合物是有价值的中间体,因为它们可以通过脱
溴得到青霉烷酸 1,1-二氧化物及其衍
生物。本发明还公开了 6-重氮青霉烷酸 1,1-二氧化物及其衍
生物以及这些新化合物的制备方法。