摘要:
(6R, 7R)-7-[(Z)-2-(2-triphenylmethylaminothiazol-4-yl)-2-(2-tert . -butoxycarbonylprop-2-oxyiminolacetamido]-3-(1-pyridiniummethyl)ceph-3-em-4-carboxylate is isolated and purified by formation of a N,N-dimethylacetamide solvate.
摘要:
A process for preparing N-chloroimides comprising contacting the corresponding imide with molecular chlorine under substantially anhydrous conditions in the presence of an epoxy compound and a tertiary amine. The novel N-chloroimide N,N'-dichloro-bicyclo(2.2.2)oct-7-ene-2,3,5,6-tetracarboxylic-2,3,5,6-diimide is prepared.