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- 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。
- 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
- 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。
- 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。
- 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
- 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。
- Starting with the readily available isatin, two designated key cyclization precurors 25 and 26 were synthesized respectively by 5 steps and 6 steps reactions ,with Wittig reaction and Corey-Chaykorsky reaction as key steps. 以商品可得的吲哚醌为起始原料,分别经过5步和6步以Wittig烯烃化,Corey-Chaykorsky反应为关键步骤的合成路线,得到2个用于的环合反应的前体亚胺25和26。
- STUDY ON PHASE TRANSFER CATALYTIC WITTIG REACTION 相转移催化维悌希反应研究
- Keywords Wittig reaction synthesis pesticide; 维悌希反应;合成;农药;
- aza - Wittig reaction 氮杂Wittig反应
- aza--Wittig reaction aza-Wittig反应
- Preparation of Ethane Type Liquid Crystal by Wittig Reaction 利用Wittig反应制备乙烷类液晶
- Could I ask for your reaction to this policy? 我能问一下您对这个政策的反应吗？
- Wittig Reactions in General Organic Chemistry Wittig反应及其在有机合成中的应用
- A reactor is a container for chemical reaction. 反应器是进行化学反应的容器。
- How many people are going to do a tandem jump? 您一共有多少人参加跳伞活动?
- Mikrotherm tandem valve the first great success. 串联阀Mikrotherm第一个卓越的成就。
- I'm displeased at your reaction. 我对你的反应很不满意。
- I've never ridden a tandem bicycle before. 我从来没骑过双人自行车。
