Wittig
英
美 [ˈwɪtɪg]
n. 维蒂希
双语例句
- 'Today was an opportunity lost,' Mr. Wittig said.
维蒂希说，这个机会今天失去了。 - A series of novel purpurin-18 imide derivatives with long absorption wavelength were synthesized through Wittig reaction of methyl pheophorbide-a.
合成的一系列红紫素-18酰亚胺衍生物具有长波长的紫外吸收。 - Study on phase transfer catalytic Wittig reaction
相转移催化维悌希反应研究 - Methods Chloroacetic acid was treated with thionyl chloride, amines and triphenylphosphine to provide quaternary phosphonium salts, which were treated with phthalic anhydride to get the target compounds by the Wittig reaction. The pure products were obtained by silica gel column chromatography.
方法以氯乙酸为起始原料，依次与氯化亚砜、胺、三苯膦反应制得季磷盐，再与邻苯二甲酸酐经Wittig反应制得目标化合物，硅胶柱色谱得纯品。 - C 1 double bond phosphonate is used in Wittig-Horner reaction directly.
将含有C1末端双键的膦酸二烷基酯直接用于WittigHorner反应。 - The Modified Wittig Reaction
改良的Wittig反应 - STUDIES ON THE WITTIG REACTION(ⅰ) The Stereochemistry of 1, 3,-diene Synthesis
维惕希（Wittig）反应的研究（Ⅰ）1,3二烯合成的立体化学 - 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。 - The synthesis of natural insecticide β-phellandrene is reported by halogenation, alkylation and Wittig reaction from cyclohexene in this paper.
本文报导用环已烯经卤化反应、烷基化反应和Wittig反应合成天然杀虫剂β-水芹烯的方法。 - Recent advances in aza Wittig reaction, including intermolecular, intramolecular and tandem ones, are reviewed. The application of the aza Wittig reactions in synthesis of some N heterocycles, fused heterocycles and natural products are also discussed.
综述了最近几年氮杂Wittig反应的研究进展，包括分子间氮杂Wittig反应、分子内氮杂Wittig反应及串联的氮杂Wittig反应。 - Applications of Wittig Reaction and Wittig-Horner Reaction in Organic Synthesis
Wittig反应及Wittig&Horner反应在有机合成上的应用 - This Paper focus on recent synthetic development of aza-Wittig reaction in nitrogen heterocyclic and explains some mechanism of the reaction of carbonyl compounds with organic azides and tertiary phosphines.
本文阐述了羰基通过叠氮化物和三价膦形成的亚胺基膦的作用，以氮杂wittig反应的方式，合成含氮杂环化合物的进展。 - In this paper, the objective compound was synthesized through the reaction of 4-nitrobenzaldehyde with the Wittig reagent prepared from 4-methylbenzyl chloride and triphenylphosphine and reduction of the resulting 1-( 4-methylphenyl)-2-( 4-nitrophenyl) ethylene.
该文以4甲基氯化苄与三苯基膦反应制备成Wittig试剂，再与4硝基苯甲醛反应得到1（4甲苯基）2（4硝基苯基）乙烯，然后经还原得到目的产物。 - Photochemical Wittig Reaction in Total Synthesis of Combretastatin A-4
CombretastatinA-4全合成中的光化学Wittig反应 - Studies on Wittig-Horner reaction in micellar media
胶束介质中的Wittig-Horner反应研究 - The numerous types of DNA-templated organic synthesis, including reductive amination, nucleophilic substitution, Henry, Wittig olefination, photochemical ligation and multistep small-molecule synthesis, etc, are reviewed.
本文综述了模板DNA指导的多种类型的有机合成反应，包括还原胺化、亲核取代、Henry、Wittig烯化、光化学连接以及多步小分子的合成等反应； - Preparation of Ethane Type Liquid Crystal by Wittig Reaction
利用Wittig反应制备乙烷类液晶 - Wittig Reaction is of great potential value in application.
Wittig型反应是一类具有巨大潜在应用价值的反应。 - Solvent Effect of Wittig Reaction
WITTIG反应的溶剂效应 - STUDIES ON THE WITTIG REACTION(ⅹ ⅳ) Anion Effects in the Wittig Reaction of Benzylic Phosphonium Ylids
Wittig反应的研究（ⅩⅣ）&苄基型膦叶立德Wittig反应中的阴离子效应 - Also, the high stereoselectivity of the Wittig olefination has been well rationalized.
同时，对该烯化反应所表现出的高度立体选择性作了合理解释。 - The yield of the Wittig reaction was raised from 61% to 78%.
把Wittig反应一步的收率提高到78%，文献为61%。 - Wittig reaction is a valuable method to form the carbon-carbon double bond, which is widely used in total synthesis of natural products and organic intermediates.
Wittig反应是合成碳碳双键的一个十分重要的方法，被广泛地应用于天然产物和有机中间体的合成中。 - Heck and wittig reaction are the main use in the Synthesis of the probe.
主要使用缩合和Wittig反应合成这些探针分子。 - In organic chemistry there are many name reactions. Wittig reaction and Diels-Alder reaction are very important reactions in organic synthesis.
许多人名反应在有机化学中占有极其重要的地位，包括Wittig反应和Diels-Alder反应。 - Classic carbon-carbon bond-forming reactions such as Grignard, Wittig, and Diels-Alder reactions have played significantly important roles in organic synthesis since their discoveries.
格氏反应、Wittig反应、Diels-Alder反应等经典的碳-碳键成键反应从它们的发现开始就在有机合成中扮演了举足轻重的角色。