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。
Conversion of the linear molecule to γ-valerolactone proceeds via hydrogenation and subsequent intramolecular cyclization with elimination of a water molecule.
因此若能进一步改进系,用这种方法来制造汽油有可能是可行的。
Levocetirizine Dihydrochloride was prepared from benzoyl chloride by acidylation,hydrogenation,cyclization with an overall yield of 8.05%.
以苯酰氯为原料,经酰
,还原,环合等反应合成左旋西替利嗪盐
盐,反应总收率为8.05%。
This paper reports the improvement on the synthesis of 5 methylisoxazol 3 formamide by Claisen condensation of diethyl oxalacetate followed by cyclization and ammonolysis.
讨论了以草二
为原料,经过克莱森缩合、环合、氨解反应合成5
基异唑3
酰胺工艺的改进。
By nucleophilic addition and reductive cyclization reaction of the three intermediates, respectively, some azo-heterocyclic derivatives containing a rosinyl skeleton were obtained.
该3个中间分别经过亲核取代、还原关环反应后,得到了一些脱氢松香
含氮杂环衍生物;
Bromacil was synthesized using 2-bromobutane and urea as the starting materials in three steps including condensation,cyclization and bromination with total yield of 61%.
以2-溴丁烷和尿素作为起始原料,经缩合、环、溴代三步反应得到除草定,总收率为61%。
Based on 3,6-dichloropyridazine, imidazo〔1,2-b〕pyridazine was synthesized via amination, cyclization and dechlorination.
以3,6-二氯哒嗪为原料,经氨、环合、脱氯得咪唑并〔1,2-b〕哒嗪。
Cyanoguanidine and acetylated β-D-ribose were used as starting materials to give target compound via salt formation, cyclization, silylation, coupling reaction and deprotection.
摘要以氰基胍和为原料,经成盐、环合反应得到5-氮杂胞嘧啶,5-氮杂胞嘧啶经硅烷
保护后,与
酰
的核糖成苷,再脱保护基得到氮杂胞苷。
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.
以邻氯苯和对
氧基苯胺为原料,经过胺的苯基
、二芳胺的环
、N-烷基
、硫代
反应合成了N-丁基-2-
氧基硫代吖啶酮。
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,邻硝基苯胺与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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