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- thermal cyclization reaction 热环化反应
- The presence of AM changes the cyclization reaction mechanism of copolymers from free radical to ionic. 结果表明，AM的引入改变了聚合物的环化机理，从自由基环化机理过渡为离子环化机理。
- Benzimidazoles(3a-c,5a-c) were synthesized in a one step reductive cyclization reaction of(o-nitroanilines)(1,4) and aryl aldehydes(2a-c). 邻硝基苯胺(1;4)与芳香醛(2a-c)在连二亚硫酸钠存在下共热;发生还原关环反应;一步即可合成苯并咪唑类化合物(3a-c;5a-c).
- Abstract: We have realized a cyclization reaction of 2,3-allenoic acids 1 in the presence of simple alkyl or aryl-substituted allenes 3. 摘要：在简单烷基或者芳香取代的丙二烯存在的情况下我们实现了2，3-亚兰敦酸的环合反应。
- Designing a cyclization reaction of caffeine to improve effect of axial mixture, recovery of materials, rate of reaction and quality of intermediate. 设计制作咖啡因车间闭环反应罐,增强轴向混合效果,从而增加物料回收,改善反应效果,提高反应收率和中间体质量。
- Further more,formylization and cyclization reaction are separately carried out in two tanks to avoid corrosion of acid and alkali for equipments. 同时,将酰化反应和闭环反应分罐进行,避免酸碱物料对设备的腐蚀。
- It was attempted to apply the phenylseleno group transfer radical cyclization reaction to the synthesis of oxygen-heterocycles. 本论文还尝试了通过苯硒基转移自由基关环反应合成含氧杂环天然产物。
- Methods Ribostamycin protected by carbobenzoxy group was treated with NaH, to give different protected intermediates under respective controllable cyclization reaction conditions. 目的发展一种新的选择性环氨基甲酸酯保护策略,用以合成具有环氨基甲酸酯结构的新型核糖霉素衍生物。
- Through a novel cyclization reaction, four new 2 - alkoxyl - 2H - 1,3,2 -benzoxazaphosphorine 2 - oxides or 2 - sulfides were synthesized . A possible cyclization mechanism was proposed. 通过一个尚未见文献报道的新型环化反应,合成了四个新型1,3,2-氧氮磷杂萘类化合物,并提出了该反应的机理。
- By nucleophilic addition and reductive cyclization reaction of the three intermediates, respectively, some azo-heterocyclic derivatives containing a rosinyl skeleton were obtained. 该3个中间体分别经过亲核取代、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；
- 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中的应用。
- The organometallic compounds - catalyzed cyclization reactions in syntheses of carbo -and heterocycles are reviewed. 综述了近年来金属有机化合物催化的环化反应在合成碳20环及杂环化合物中的应用。
- The recent achievements of synthesizing hetorocyclic compounds by palladium catalyzed monomolecular, dimolecular and trimolecular cyclization reactions were introduced. 介绍了钯催化单分子、双分子及三分子环化合成杂环化合物的新成就.
- Methods: Simvastatin was synthesized from lovastatin via several steps involving acetylization,methylation,hydrolytic decomposition and cyclization reactions. 方法:以洛伐他汀为原料,通过酰化、甲基化、水解、环合等反应合成了辛伐他汀。
- A series of eneynes and alkynes has been widely utilized for the platinum-catalyzed cyclization reactions leading five/six-member rings or complex ring constructions. 概述了铂催化剂在炔烃\\烯炔类化合物成环反应中的应用,反应以较易得的原料,构建出五元、六元环及多种复杂环结构体系。
- intramolecular cyclization reaction 分子内环化反应
- A term sometimes applied to a stylus in a thermal matrix printer. 有时用来指热敏点阵打印机的触针的一个术语。
- Could I ask for your reaction to this policy? 我能问一下您对这个政策的反应吗？
- A reactor is a container for chemical reaction. 反应器是进行化学反应的容器。
- Green Progress on Olefinic Oxidation and Cyclization Reaction 烯烃的氧化及环化反应的绿色化进展
