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- Ropivacaine hydrochloride in 54% yield was synthesized from N-(2,6-dimethylphenyl)-piperidine-2-carboxamide),which was obtained in 50.1% yield from 2-pipecolic acid by chlorination using triphosgene as an acyl chlorination agent and amidation. 以三光气为酰氯化剂;2-哌啶甲酸经酰氯化;酰胺化制得1-N-(2;6-二甲基苯基)-2-哌啶甲酰胺(2);收率50.;1%25(以2-哌啶甲酸计)。 以DMF为溶剂;2经丙基化反应合成了盐酸罗哌卡因(1);收率54%25。
- The yield of chlorination was 92.8%,using phosphorus oxychloride as the chlorinating agent. 在氯化反应中，以三氯氧磷为氯化剂，产率为92.;8%25。
- Gallium in hot metal is removed by chlorination treatment using iron chloride as chlorination agents. 在铁水中用氯化铁为氯化剂进行氯化法提镓。
- In the reaction of chlorination, carbon tetrachloride was used as agent, and chlorine gas as chlorinating agent. 在氯化反应中,以四氯化碳为溶剂,氯气为氯化剂。
- Then,2-methyl-2-hydroxy-1-phenyl-1-pentanone was prepared by chlorination and hydrolysis with 2-methyl-1-phenyl-1-pentanone in the presence of NaOH and CCl4 as chlorinating agent and tetrabutyl ammonium bromide as the phase transfer catalyst. 最后在氢氧化钠水溶液中,以四氯化碳为氯化试剂,四丁基溴化铵作相转移催化剂,2-甲基-1-苯基-1-戊酮直接氯代和水解制得2-甲基-2-羟基-1-苯基-1-戊酮。
- The result showed that satisfactory results could be obtained by using thionyl chloride as the chlorinating agent and bexanolactam as the catalyst. 结果表明，在己内酰胺存在下，用氯化亚砜氯化法是一种较理想的制备途径。
- Chlorinated polybutadiene rubber(CBR) containing active chlorine was synthesized when t-butyl hypochlorite was employed as chlorinating agent under organic acid circumstance(formic acid and chloroacetic acid). 以次氯酸叔丁酯为氯化剂,氯乙酸为活性氯原子的引入剂,在甲酸存在下合成了既含有活性氯原子又含有惰性氯原子的氯化顺丁橡胶(CBR)。
- Trichloroisocyanuric acid is a very useful compound, it is used as oxidant, chlorinating agent, disinfecting detergent and bleaching agent. The methods for its synthesis were reviewed. 综述了三氯异氰尿酸的合成,在有机合成中用作氧化剂和氯化剂,以及在橡胶处理、纤维漂白、水体消毒等工业生产和日常生活中的应用情况。
- I booked my holiday through my local travel agent. 我是由本地的旅游代理人预先安排的度假事宜。
- The tour is arranged by our local travel agent. 这个旅游团是由我们的本地旅游代理商组织安排的。
- For further information, contact your local agent. 要进一步了解情况，请与本地代理商联系。
- FBI is on the look out for the agent these days. 这些天联邦调查局正在注意那个特工。
- The agent spoke on behalf of his principal. 代理人代表他的委托人说话。
- The methods for preparing trimethylacetyl chlo ride have been studied by reaction of trimethylacetic acid with various chlorinating agents. 研究了以三甲基乙酸为原料，与不同氯化剂反应制备三甲基乙酰氯的方法。
- I made my assistant my agent while I was abroad. 我请我的助手在我出国期间做我的代理人。
- Our travel agent routed us through Italy. 我们的旅行社安排我们途经义大利。
- Thank you for your proposal of acting as our agent. 谢谢你方作为我们代理的建议。
- As commission agent we do business on commission basis. 作为佣金代理商，我们是以佣金为基础做生意的。
- A medicine or an agent that induces absorption. 吸收剂导致吸收的药品或药剂
- An agent through which vital powers are exercised. 支柱，支持物生命力赖以释放的动原
