The phenylacetyl ethanolamine,a low toxic precurson of benzylpenicillin,was synthesized by using ethyl phenylacetate and colamine as raw materials.

以苯乙酸乙酯和乙醇胺为原料合成了苄青霉素低毒前体苯乙基乙醇胺。

The title resin has been prepared by Friedel-Crafts acylation followed by bromination and amination.The method avoids the utilization of cancerogenic chloromethyl methyl ether.

通过基反乙基，接着溴、胺，得到标题树脂。该法避免了使用氯甲醚。

Using 2-acetyl benzimidazole and sodium bromide as raw material,2-(dibromine acetyl)-benzimidazole hydrobromate was synthesized with the new bromine that displaced by chlorine gas in light.

以2-乙基苯并咪唑和溴钠为原料,在光照条件下用氯气置换出溴钠中的溴素,合成兽药噻苯咪唑中间体-2-(二溴乙基)-苯并咪唑氢溴酸盐。