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作 者:李力[1]
机构地区:[1]南京医药股份有限公司恒生制药厂,江苏南京211200
出 处:《药学进展》2000年第5期304-305,共2页Progress in Pharmaceutical Sciences
摘 要:以对氯苯乙腈为起始原料 ,经水解、取代、氨化三步反应合成了对羟基苯乙酰胺。水解反应采用相转移催化法 ,收率达 80 %以上 ;三步反应总收率为 78%。该工艺路线反应步骤较短 ,收率较高 ,原料易得。p Hydroxy benzylacetamide is synthsized through hydrolysis,displacement,and amination from p chlorobenzylnitrile. In the hydrolysis procedure, phase transfer catalyst was used, with over 80 percent yield,and the total yield is 78 percent after three reactions.This synthesis has the advantage of shorter route and higher yield, and the raw material is available easily. Key words: p Chlorobenzylnitrile;TEBA;p Hydroxy phenylacetic acid;p Hydroxy benzylacetamide]$$$$ $$$$ Hu Zhineng Xu JiupingAbstract. In this paper, the impact of tariffs and exchange rate on consumption and investment in an open economy of scarcity of capital is analysed.The dynamics and market price of capital,and the solution of foreign asset holding of the firm are discussed.Particular attention is also devoted to the social welfare aspects. [FQ(6*2。39,X-W] Received:1999 09 02. 1991 MR Subject Classification:90A58,90A70,90A16.
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