Application of samarium diiodide in mediating intramolecular cyclization reactions was reviewed.
综述了碘化钐在分子内环化反
用。
Application of samarium diiodide in mediating intramolecular cyclization reactions was reviewed.
综述了碘化钐在分子内环化反
用。
Levocetirizine Dihydrochloride was prepared from benzoyl chloride by acidylation,hydrogenation,cyclization with an overall yield of 8.05%.
以苯甲酰氯为原料,经酰化,还原,环合等反合成左旋西替利嗪盐酸盐,反
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原料,经水解、乙酰化、环酸酯化、氧化、脱
酸酯化、酰化、环氨基甲酸酯化和环合等反
合成目标化合物。
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.
以邻氯苯甲酸和对乙氧基苯为原料,经过
苯基化、
环化、N-烷基化、硫代化反
合成了N-丁基-2-乙氧基硫代吖啶酮。
This paper reports the improvement on the synthesis of 5 methylisoxazol 3 formamide by Claisen condensation of diethyl oxalacetate followed by cyclization and ammonolysis.
讨论了以草酸乙酯为原料,经过克莱森缩合、环合、氨解反
合成5甲基异唑3甲酰
工艺
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.
以苯酐和取代苯为原料,经过乙酰化、水解及环合反,合成了2-氯蒽醌和2-氨基蒽醌,并对影响收率
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.
本文研究了三氯化钛水溶液作用下,邻硝基苯与1,2-
酮在碱性介质
分子间
成环反
,提供了一个方便地合成取代喹喔啉类化合物
方法。
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