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

以酸酯和醇胺为原料合成了苄青霉素低毒前体酰基醇胺。

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.

通过付氏酰基反应引入酰基，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-酰基和溴钠为原料,在光照条件下用氯气置换出溴钠中的溴素,合成兽药噻中间体-2-(二溴酰基)-氢溴酸盐。