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- Cyclization occurs readily with dilute alkali. 遇到稀碱就容易环化。
- 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;环合等反应合成左旋西替利嗪盐酸盐;反应总收率为8.;05%25。
- Study progress on cyclization of citronellal to(-)-isopulegol over catalysts is reviewed. 综述催化香茅醛环化为(-)-异胡薄荷醇的催化剂研究进展.
- Sodium ethylate was used as catalyst in Baker-Venkataraman of cyclization, and all factors were studied. 环合反应采用乙醇钠作为Baker-Venkataraman重排反应的催化剂,研究了影响反应的各个因素。
- METHODS Gimeracil was synthesized by steps of condensation, cyclization, chlorination and hydrolysis. 方法以丙二腈为起始原料，经缩合、环合、氯化、水解等5步反应制得吉美拉西。
- 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 mechanism was discussed in the proton acid catalytic reaction of furan phenol cyclization. 探讨了呋喃酚环合反应质子酸催化机理。
- 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。
- In contrast, switching the acylsilane functionality to an aldehyde, the radical cyclization failed. 至于将矽基酮的部分换成醛基时，自由基反应则无法进行。
- Menthol was obtained from lemon eucalyptus oil via cyclization and catalytic hydrogenation. 以柠檬桉叶油为主要原料经环化、催化氢化二步反应得到薄荷醇。
- The phenomonon was explained in view of the mechanism of chemical cyclization of poly(amic acid). 从聚酰胺酸化学环化反应机理出发对这一结果给予了解释。
- By adapting continuous technique of adding SO3 in the cyclization process, the volum... 该工艺已实现产业化。利用此工艺,合成了其他硫杂蒽酮类光引发剂。
- 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。
- METHODS Bretazenil was synthesized from 3-bromoaniline by cyclization, oxidation and ring-enlargement reaction, etc. 方法以3-溴苯胺为起始原料,经过成环、氧化、扩环等反应得到目标产物。
- The effect of solvents and steric hidrance on the stereochemistry of cyclization is investigated in details. 并且考察了在环合反应中溶剂和空间位阻对立体选择性的影响。
- Diazaspiro [4.4] nonane was synthesized from malononitrile as the starting material by a series of nucleleophilic displacement, hydrolytic cyclization and carbonyl reduction. 摘要以丙二腈为原料，经过亲核取代、水解环合、羰基还原系列反应，合成了2，7-二氮螺[4.;4]壬烷。
- Methods Starting with 3-fluorophenyl isocyanate and(R)-epichlorohydrin, linezolid was synthesized through cyclization, substitution, acylation, bromination, and condensation. 方法以(R)-环氧氯丙烷和间氟苯基异氰酸酯为起始原料，经环化、叠氮化、还原、酰化、溴代、缩合反应得到利奈唑酮。
- METHODS Bropirimine was synthesized by 3 steps reaction of acylation, cyclization and bromination with ethyl acetoacetate as staring material. 方法以乙酰乙酸乙酯为起始原料,经酰化、环合、溴化3步反应合成溴匹立明。
- Ketoprofen was synthesized from anline by amidation, cyclization, benzylation, hydrolysis, deamination and oxidation with an overall yield of 42.5 %. 以苯胺为起始原料;经过酰胺化、环合、苄基化、水解、脱胺基、氧化等几步反应;得到产物酮基布洛芬;总收率42.;5%25。
- Ionone was synthesized from Litsea cubeba oil and lemen oil,and condition of condensation,cyclization and purification of product was studied. 以山苍子油、柠檬草油为原料合成紫罗兰酮,研究了缩合反应、环化反应、产品精制的工艺条件;
