申请人:ICI PHARMA
公开号:EP0117651A2
公开(公告)日:1984-09-05
A process for the manufacture of 7-(imidazol-2-yl)amino-3-(1H-1,2,3-triazol-4-yl)thiomethylceph-3-em-4-carboxylic acid, and the acid- and base-addition salts thereof, characterised by reaction of a compound of the formula 1:
in which R1 is a displaceable radical with 4-mercapto-1H-1,2,3-triazole or a base-additional salt thereof in a diluent or solvent consisting of trifluoroacetic acid, trichloroacetic acid, acetonitrile or sulpholane, or a mixture of any two or three of these, in the presence of boron trifluoride or a complex thereof;
whereafter when the product is obtained as the free base or the salt, and the salt or free base respectively is required, the interconversion between salt and free base is carried out by conventional means.
一种生产 7-(咪唑-2-基)氨基-3-(1H-1,2,3-三唑-4-基)硫代甲基巯基-3-em-4-羧酸及其酸和碱加成盐的工艺,其特征在于将式 1.中 R1 为可置换基的化合物与 4-巯基-1H-1,2,3-三唑或其碱加成盐在由三氟组成的稀释剂或溶剂中反应:
其中 R1 为可置换基团与 4-巯基-1H-1,2,3-三唑或其碱加成盐在三氟化硼或其络合物存在下,在由三氟乙酸、三氯乙酸、乙腈或磺烷或其中任意两种或三种的混合物组成的稀释剂或溶剂中进行反应;
此后,当获得游离碱或盐的产品,并需要分别获得盐或游离碱时,通过常规方法进行盐和游离碱之间的相互转化。