Application of samarium diiodide in mediating intramolecular cyclization reactions was reviewed.
综述了二碘钐在分子内环
反应中的应用。
Application of samarium diiodide in mediating intramolecular cyclization reactions was reviewed.
综述了二碘钐在分子内环
反应中的应用。
Levocetirizine Dihydrochloride was prepared from benzoyl chloride by acidylation,hydrogenation,cyclization with an overall yield of 8.05%.
以甲酰氯为
料,经酰
,
,环合等反应合成左旋西替利嗪盐酸盐,反应总收率为8.05%。
Method The target compound was synthesized from clarithromycin via hydrolyzation,acetylation,cyclic carbonatation,oxidation,decarbonatation,acylation,cyclic carbamatation and cyclization.
方法以克拉霉素为起始料,经水解、乙酰
、环
酸酯
、
、脱
酸酯
、酰
、环氨
甲酸酯
和环合等反应合成目标
合物。
N butyl 2 ethoxy thioacridone was prepared from o chloro benzoic acid and p phenetidine by means of Ullman reaction,cyclization,N alkylation and sulfurization.
以邻氯甲酸和对乙
胺为
料,经过胺的
、二芳胺的环
、N-烷
、硫代
反应合成了N-丁
-2-乙
硫代吖啶酮。
This paper reports the improvement on the synthesis of 5 methylisoxazol 3 formamide by Claisen condensation of diethyl oxalacetate followed by cyclization and ammonolysis.
讨论了以草酸二乙酯为料,经过克莱森缩合、环合、氨解反应合成5甲
异唑3甲酰胺工艺的改进。
In this paper, the synthesis of 2 - chloranthraquinone and 2 - aminoanthraquinone was studied.It was prepared from phthalic anhydride by acetyiation, hydrolysis and cyclization.
以酐和取代
为
料,经过乙酰
、水解及环合反应,合成了2-氯蒽醌和2-氨
蒽醌,并对影响收率的工艺条件进行了研究。
Aqueous titanium trichloride promoted intermolecular reductive cyclization of 1,2 -diketone and o-nitroaniline in basic media provides a convenient method for the synthesis of quinoxaline derivatives.
本文研究了三氯钛水溶液作用下,邻硝
胺与1,2-二酮在碱性介质中分子间的成环反应,提供了一个方便地合成取代喹喔啉类
合物的方法。
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