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- STUDY ON PHASE TRANSFER CATALYTIC WITTIG REACTION 相转移催化维悌希反应研究
- Synthesis of (L)-Lactataldehyde and stereoselectivity of its Wittig reaction. 在微通道反应器中合成2-乙基-2-苯基-3-溴-3-丁烯醛
- Dicyclohexyl disulfide was prepared by reaction of chlorocyclohexane and sodium disulfide using phase transfer catalyst(PTC). 采用相转移催化剂,氯代环已烷与二硫化钠溶液反应合成了二环已基二硫醚。
- The phase transfer catalyst Q-l can be repeatedly used. 相转移催化剂可反复使用。
- The p-tolyl benzyl ether was synthesized by the reaction of p-cresol and benzyl chloride with phase transfer catalyst TBAB under microwave irradiation. 在相转移催化剂作用下,以氯化苄和对甲苯酚为主要原料,通过微波辐射合成对甲苯基苄基醚。
- The multiblock copolymers exhibit good emulsifying properties and good phase transfer catalystic properties in Williamson reaction. 并研究其乳化性能和相转移催化性能。
- A new path for the preparation of leaf alcohol with 3-chloropropanol, triphenylphosphine and propionaldehyde through Wittig reaction was studied. 本文研究了以3-氯丙醇,三苯基膦和丙醛为原料利用威蒂希反应合成叶醇的新路线。
- In this paper, two unsaturated alicyclic nitrogen heterocyclic crownethers were synthesized by phase transfer reaction . 采用相转移催化反应合成了两个不饱和脂环氮杂冠醚。
- A group of multi substituted phenols were prepared via intramolecular wittig reaction of a kind of long chain phosphonic ylides. 一类含六个碳的长链叶立德通过分子内维蒂希反应可生成含氟多取代苯酚 .
- ATRP of 4-vinylbenzyloxy benzophenone followed by Wittig reaction led to polystyrene backbone with 1, 1-diphenylethene (DPE) pendent groups. 通过ATRP聚合4-乙烯基苄氧基二苯甲酮,合成了含二苯甲酮侧基的聚苯乙烯,然后利用Wittig反应,将二苯甲酮基团定量的转化为二苯基乙烯(DPE)基团,得到含DPE侧基的聚苯乙烯主链。
- Partly sulfonated polyepichlorohydrin was synthesized by phase transfer catalytic reaction of linear polyepicholohydrin oligmer and sulfite. 用相转移催化聚环氧氯丙烷与亚硫酸盐反应合成磺酸聚醚。
- The calculated results show that the aza Wittig reaction is a two step reaction, having one four membered ring intermediate on its reaction surface. 计算结果表明该反应是一个二步反应,在反应途径上存在一个四元环中间体。
- The inference of potassium permanganate amount, phase transfer catalyst, reaction temperature and solvent amount are studied. 考察了高锰酸钾的用量、相转移催化剂的品种及用量、反应温度、溶剂用量对氧化反应收率的影响。
- With the new method and adding the phase transfer catalyst in the reaction the yields of benzoic acid can be greatly increased. 若改变操作方法,在反应中加入相转移催化剂,可使苯甲酸的产率大大提高。
- The effect of phase transfer catalyst,base and reactant dosage on reaction were studied.The optimal reaction time.reaction temperature and reactants... 探讨了相转移催化剂、碱反应物的量及温度对合成反应的影响,找到了最佳的反应时间,反应温度及原料配比。
- Seven new cinnamoyl substituted hydrazide compounds were synthesized by reaction of cinnamyl chloride with different hydrazides under phase transfer catalysis condition. 摘要利用相转移催化法,由肉桂酰氯与取代单酰肼反应,得到7种肉桂酰取代酰肼类化合物;
- Diphenylmethyl(6R,7R)-8-oxo-7-(phenylacetyl)amino-3-vinyl-5-thia-l-azabicyclo[4.2.0] oct-2-ene-2-carboxylate(8) were synthesized according to Wittig Reaction via fractional step method and one-pot process separately. a、C-3位直接与双键相连的头孢菌素衍生物:分别以“分步法”与“一锅法”采用魏悌锡(Wittig)反应合成了(6R;7R)-7-苯乙酰氨基-8-氧代-5-硫-1-氮杂双环[4.;2
- Six N-substituted phenothiazenes had been sythesized by liquid-liq- uid phase transfer catalytic reaction,tetrabutylammonium bromide being used as the phase transfer catalyst. 本文叙述以四正丁基溴化铵为相转移催化剂,液一液相转移催化合成了六个N-取代吩噻嗪化合物。
- Methods:Starting from 4-hydroxyphenylacetic acid and pthalide, olopatadine hydrochloride was synthesized via nine synthetic route, such as nucleophilic,substitution, cyclization and Wittig reaction. 方法:以对羟基苯乙酸和苯酞为原料,经取代、环合、维蒂希反应等9步反应合成目标产物。
- A technological improvement was made on the synthesis of benzyl acetate by the condensation reaction with n tetrabutylammonium chloride as the phase transfer catalyst. 用氯化四正丁基铵作为相转移催化剂,对缩合法合成乙酸苄酯工艺进行改进。