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1)  Witting polycondensation reaction
Wittig缩聚
2)  Wittig-Hornor reaction
Wittig-Hornor缩合
3)  Wittig condensation
Wittig缩合
1.
A new compound,(E)-1,2,3-tri(furan-2-yl)prop-2-en-1-one,was synthesized by the Wittig condensation of furil and 2-furylmethylene-ylide in ionic liquid in yield of 90%.
以离子液体[bmim][BF4]为反应溶剂,糠偶酰与2-呋喃基亚甲基叶立德经Wittig缩合合成了新化合物——顺式-1,2,3-三(2-呋喃基)-2-丙烯-1-酮,产率90%,其结构经1HNMR和MS表征。
4)  Polymeric Wittig reagent
聚合物wittig试剂
5)  condensation [英][,kɔnden'seɪʃn]  [美]['kɑndɛn'seʃən]
缩聚
1.
Optimization of polyester condensation process and reactor design;
聚酯缩聚工艺及反应器优化分析
2.
The Structure Characters of the Sulfonated Condensation Polymer Series High Performance;
缩聚型磺酸系列高性能外加剂的结构特点
3.
The pH value of the solution was adjusted,and the co-condensation reaction was taken place between the hydroxy groups forming transparent organic-inorganic hybrid films on polycarbonate(PC).
以甲基丙烯酰氧基丙基三甲氧基硅烷(KH-570)水解聚合产物作为主要成膜物质,引入正硅酸乙酯(TEO S)水解产物硅溶胶作为无机增强物,调节两种混合溶液pH值,利用两者羟基之间的共缩聚反应在聚碳酸酯(PC)板表面制备有机/无机复合透明耐磨薄膜;采用TG/DTA、FT-IR、SEM及UV-V IS对成膜过程、薄膜性能与结构进行表征。
6)  condensation polymerization
缩聚
1.
In this paper , the PLA-BDO-PLA block prepolymer was synthesized through reaction of condensation polymerization using lactic acid and 1,4-butanediol and macromonomer of polyurethane acrylate was synthesized using prepolymer, isophorone diisocyanate and hydroxyethylmethylacrylate.
利用乳酸与1,4-丁二醇(BDO)的缩聚反应,合成了PLA-BDO-PLA型嵌段预聚物,该预聚物与异佛尔酮-二异氰酸酯(IPDI)、甲基丙烯酸β羟乙酯(HEMA)反应,得到了聚氨酯丙烯酸酯大分子单体,将其固化制得聚氨酯材料。
2.
With the aim of enhancing the nonlinear optical property of poly (thiophene methines), poly[(thiophene-2,5-diyl)p-(N,N-dimethylamino) azobenzylidene] (PTDMAAB) is prepared from 4-aldehyde-4'-dimethylamino azobenzene (ADMAA) and thiophene through condensation polymerization reaction.
为了提高聚噻吩甲烯的非线性光学性能,通过4-醛基-4'-二甲胺基偶氮苯和噻吩的缩聚反应,合成了聚噻吩对二甲氨基偶氮苯甲烷(PTDMAAB),再用PTDMAAB与四氯苯醌发生脱氢反应合成了侧链含偶氮的聚噻吩甲烯(PTDMAABQ)。
3.
Then,the Schiffs base was condensation polymerization with 4,4'-diaminodiphenylmethane,4,4'-diamino-diphenylether or 4,4'-diaminodiphenyl sulphone respectively to prepare three novel polyaramides.
以该二元羧酸西佛碱分别与 4 ,4’ -二氨基二苯甲烷、4 ,4’ -二氨基二苯醚、4 ,4’ -二氨基二苯亚砜进行缩聚反应 ,制备了三种新型的聚芳酰胺 ,所得聚芳酰胺可溶于强极性溶剂 ,并具有一定耐热性能。
补充资料:[2,3]Wittig rearrangement
分子式:
CAS号:

性质:烯丙基芳甲基醚的负离子受热,发生[2,3]单键转移(σ转移)反应,生成烯丙基芳甲基醇化合物。类似的含硫、含氮的化合物也有同样的重排反应。

说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条