cyclization

Application of samarium diiodide in mediating intramolecular cyclization reactions was reviewed.

综述了二碘化钐在分子内环化反应的应用。

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催化体系，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%.

以苯甲氯为原,化,还原,环合等反应合成左旋西替利嗪盐酸盐,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.

讨论了以草酸二酯为原,过克莱森缩合、环合、氨解反应合成5甲基异唑3甲胺工艺的改进。

By nucleophilic addition and reductive cyclization reaction of the three intermediates, respectively, some azo-heterocyclic derivatives containing a rosinyl skeleton were obtained.

该3体分别过亲核取代、还原关环反应后，得到了一些脱氢松香酸甲酯含氮杂环衍生物；

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,缩合、环化、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,氨化、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.

摘要以氰基胍和甲酸为原，成盐、环合反应得到5-氮杂胞嘧啶，5-氮杂胞嘧啶硅烷化保护后，与化的核糖成苷，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.

以邻氯苯甲酸和对氧基苯胺为原,过胺的苯基化、二芳胺的环化、N-烷基化、硫代化反应合成了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.

本文研究了三氯化钛水溶液作用下,邻硝基苯胺与1,2-二酮在碱性介质分子的成环反应,提供了一方便地合成取代喹喔啉类化合物的方法。