1) Curtius rearrangement
Curtius重排
1.
In this reaction, a new method of Curtius rearrangement was used to synthe- size 4-bromophehyl isocyanate.
以4-溴苯甲酸为原料,经过Curtius重排反应制得4-溴苯异氰酸酯,再进一步与3-氨基-1H-1,2,4-三氮唑发生亲核加成反应,合成了目标产物1-(4-溴苯基)-3-(1H-1,2,4-三氮唑-3-基)脲。
2.
New compounds of the type of unsymmetrically substituted ureas are synthesized by a series of reactions of preparing organic isocyanates by Curtius rearrangement with aromatic amine.
以3 苯基 2 丙烯酸(肉桂酸)为原料,用Curtius重排的方法合成异氰酸酯,直接与芳香胺作用,合成了5 种N 取代苯基 N′ 苯丙烯基脲类化合物。
3.
trans-4-Methylcyclohexane isocyanate was synthesized from p-toluic acid by reduction with 10%Pd(OH)2/C and then isomerization in basic solution to give trans-4-methylcyclohexanecarboxylic acid, which subjected tochlorination with phosphorus pentachloride, azidation with sodium azide and then Curtius rearrangement with an overallyield of 60%.
对甲苯甲酸经10%Pd(OH)2/C还原、碱性异构化得反-4-甲基环己甲酸,经PCl5氯代、NaN3叠氮化后经Curtius重排得反-4-甲基环己基异氰酸酯,总收率60%。
2) Curtius rearrangement reaction
Curtius重排
1.
A new and simple method for the synthesis of Aromatic Isocyanates is developed by using solid-liquid phase transfer catalysis with Curtius rearrangement reaction.
讨论了在固 -液相转移催化下 ,采用Curtius重排反应 ,合成对甲基苯基异氰酸酯的新方法。
2.
A new and simple method for the synthesis of Aromitic Isocyanates was developed by solid - liquid phase transfer catalysis with curtius rearrangement reaction.
在固-液相转移催化下,采用Curtius重排反应合成了一系列 芳香异氰酸酯。
3) curtius rearrangement reaction
Curtius重排反应
4) Curtius reaction
Curtius反应
5) rearrangement
[英][,ri:ə'reindʒmənt] [美][,riə'rendʒmənt]
重排
1.
Application of propiophenone rearrangement by 1,2-aryl shift in poly[styrene(iodosodiacetate)];
聚苯乙烯二醋酸碘苯在芳丙酮1,2-芳基迁移重排反应中的应用
2.
Montmorillonite K-10 Catalysed Some Dehydration-rearrangements;
关于蒙脱土K-10催化的烯丙醇脱水重排和二烯-酮-酚重排机理探讨
3.
Catalytical Rearrangement of 1,6-Dihydro-S-tetrazine with Isocyanate;
1,6-二氢-S-四嗪与异氰酸酯催化重排反应的研究
6) reassignment
重排
1.
Time-Frequency Reassignment Method and its Application in Pipeline Guided-wave Signals Processing;
时频重排方法在管道导波信号处理中的应用
2.
Blind parameters extraction of frequency-hopping signals based on reassignment SPWVD;
基于重排SPWVD的跳频信号参数提取方法
3.
The reassignment method has been proved to produce a better localization of the signal components and to improve the readability of the time-frequency representation(TFR) by concentrating its energy at a center of gravity.
重排方法通过将代表信号局部能量分布的几何中心重排到其质量中心,从而提高时频表示的聚集性和可读性,但是并没有完全消除交叉项。
补充资料：Curtius rearrangement
分子式：
CAS号：
性质：指酰基叠氮化物1在惰性溶剂(如苯、氯仿等)中加热重排成异氰酸酯2的反应。式中R可以是烷基或芳基。原料1可用酰氯与叠氮化钠反应制得。产物2经水解或醇解即形成比原料1少一个碳原子的羧酸或酯(分子式暂缺)。
CAS号：
性质：指酰基叠氮化物1在惰性溶剂(如苯、氯仿等)中加热重排成异氰酸酯2的反应。式中R可以是烷基或芳基。原料1可用酰氯与叠氮化钠反应制得。产物2经水解或醇解即形成比原料1少一个碳原子的羧酸或酯(分子式暂缺)。
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