Reductive removal of the bromine atom(s) of 6,6-dibromo- and 6-bromopenicillanate 1-oxides has been performed successfully on treatment with aluminum metal in the presence of a catalytic amount of lead(II) bromide in methanol containing 1% aqueous hydrobromic acid. In a similar manner, 6,6-dibromopenicillanates and their 1,1-dioxides can be convened to the corresponding debromination products, respectively.
在含有 1% 的甲醇中,在催化量的溴化铅 (II) 存在下,用金属铝处理,成功还原去除了 6,6-二溴- 和 6-溴青霉烷酸 1-氧化物中的溴原子氢溴酸水溶液。以类似的方式,6,6-二溴青霉烷酸酯及其1,1-二氧化物可以分别转化为相应的脱溴产物。
HANESSIAN, STEPHEN;ALPEGIANI, MARCO, TETRAHEDRON, 45,(1989) N, C. 941-950