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insertion reaction
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  插入反应
    New methods for the synthesis of α-halo-α, β-unsaturated and α-diazo carbonyl compounds have been investigated in this paper. In addition, the O-H insertion reaction of the α-diazo carbonyl compounds has been exploited.
    本论文探讨了α-卤代-α,β-不饱和酯的新合成方法以及α-重氮羰基化合物的合成与O-H插入反应
短句来源
    New O-H insertion products were generated via Rh_2(OAc)_4-mediated intermolecular O-H insertion reaction of the α-diazo-β-carbonyl-γ-alkynic esters with alcohols.
    在Rh_2(OAc)_4催化下,α-重氮-β-羰基-γ-炔酯与醇发生分子间O-H插入反应,形成含碳-氧杂键的新化合物。
短句来源
    The reaction mechanism is the insertion reaction of weakly adsorbed CO into the adsorbed methoxy groups.
    吸附态的甲氧基诱导弱吸附的CO进行插入反应是生成碳酸二甲酯的途径 .
短句来源
    Ethyl diazoacetate (EDA) undergoes a facile bis (salicylaldehydato) copper (Ⅱ) carbenoid mediated O-H insertion reaction with ethyl lactate to afford the title compound. The title compound was used as a synthetic precursor for flavor:2,5-dimethyl-4-hydroxyl-3(2H)-furanone.
    采用重氮乙酸乙酯(EDA)与乳酸乙酯在二水杨醛铜(Ⅱ)催化下进行O—H插入反应合成了香料呋喃酮前体化合物α-甲基-缩二乙醇酸二乙酯。
短句来源
  嵌入反应
    Synthesis of LiCu0.5Mn1.5O4 and Its Li+Extraction/Insertion Reaction in Aqueous Solution
    尖晶石构造LiCu_(0.5)Mn_(1.5)O_4的合成及其在水溶液中对Li+的抽出/嵌入反应
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  “insertion reaction”译为未确定词的双语例句
    Theoretical Studies on the Insertion Reaction of Silylenoid H_2SiNaF with R—H(R=F, OH, NH_2, CH_3)
    钠氟类硅烯插入R_H键(R=F,OH,NH_2,CH_3)反应的理论研究
短句来源
    The insertion reaction of silylenoid H 2SiNaF with RH(R=F,OH,NH 2,CH 3) was studied at B3LYP/6-31G* level by using density functional theory.
    用密度泛函方法研究了钠氟类硅烯插入 R_ H键 ( R=F,OH,NH2 ,CH3)的反应机理 .
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  insertion reaction
All these effects require introduction of a special kinetic mechanism which postulates an unusually low activity of growing polymer chains containing one ethylene unit, the Ti-C2H5 group, in the ethylene insertion reaction into the Ti-C bond.
      
The low value of the C-P-C angle, 84.2(2)°, reflects the steric strain around the phosphorus bridge and may be responsible for the reactivity of esters and amides derived from1 in the O-insertion reaction with m-chloro-perbenzoic acid.
      
In the case of 1-(o-tolyl)-5-phenyltetrazole an alternative pathway is observed, involving cyclization of the nitrene intermediate at the methyl group (an insertion reaction into a C-H bond) to form dihydroquinazoline derivatives.
      
No specific influence on the CO insertion reaction could be obtained.
      
When the insertion reaction to the thylakoids was performed at 10 °C, followed by their separation into stromal and granal lamellae, the labelled pLHCP was localized in the stromal ones.
      
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LiLn (π - C_3H_5)_4·nD (Ln=La,Tb,n=3;Ln=Ce,Pr,ND,Sm, Gd, Er, n = 2;Ln=Y,Dy,n= 2. 5; D=dioxane) can polymerize isoprene and styrene except Erium complexes, in which Yittrium complex is with the highest activity.About 43 -81% cis- 1.4 chains are contained in the polyisoprene with different complexes. The insertion reaction of isoprene between π-allyl and rare earth in the previoius paper was confiremed.High 3,4-polyisoprene was obtained by adding some Lewis bases to the polymerization systems.Polystyrene...

LiLn (π - C_3H_5)_4·nD (Ln=La,Tb,n=3;Ln=Ce,Pr,ND,Sm, Gd, Er, n = 2;Ln=Y,Dy,n= 2. 5; D=dioxane) can polymerize isoprene and styrene except Erium complexes, in which Yittrium complex is with the highest activity.About 43 -81% cis- 1.4 chains are contained in the polyisoprene with different complexes. The insertion reaction of isoprene between π-allyl and rare earth in the previoius paper was confiremed.High 3,4-polyisoprene was obtained by adding some Lewis bases to the polymerization systems.Polystyrene was identified as atactic polymer by IR spectrum .

本文研究了LiLn(π-C_3H_5)_4·nD(Ln=La、Tb,n=3;Ln=Ce、Pr、Nd、Sm、Gd、Er,n=2;Ln=Y、Dy,n=2.5;D为二氧六环)催化异戊二烯和苯乙烯的均聚合反应.其中,钇配合物的催化活性为最高.聚异戊二烯顺式-1,4链节含量在43-81%.聚合体系内少量给电子体的加入使聚合物中3,4-链节含量高达84%.所得聚苯乙烯为无规结构.

The mechanism of the reaction or the CH radical with NH3 has been theoretically studied at the MP2/6-31G** level.The calculation results Indicate that the insertion reaction path is the favourable channel, which is in line with Lin's proposal based on their kinetic experiments. A detailed description of the complicated insertion reaction path is presented.

ABINITIOSTUDYONTHEREACTIONOFCHWITHNH3¥ZhiXiangWANG;RuoZhuangLIU;MingBaoHUANG;ZhongHuaYU(Departmentofchemistiy,BeijingNormalUn...

Diazo carbonyl compounds can be decomposed under various conditions and result in diverse types of chemical transformations.For this reason,their application in organic synthesis have attracted considerable attention.In order to gain deep insight into the mechanism of the synthetically well established Rh(Ⅱ) mediated intramolecular C\|H insertion reaction,the classic physical organic chemistry method,the Hammett linear free energy correlation,has been applied.In the development of new synthetic methodologies...

Diazo carbonyl compounds can be decomposed under various conditions and result in diverse types of chemical transformations.For this reason,their application in organic synthesis have attracted considerable attention.In order to gain deep insight into the mechanism of the synthetically well established Rh(Ⅱ) mediated intramolecular C\|H insertion reaction,the classic physical organic chemistry method,the Hammett linear free energy correlation,has been applied.In the development of new synthetic methodologies of α diazo carbonyl compounds,it was found that Cu(acac)\-2 can effectively promote the diazo decomposition and resulted in selective intramolecular N\|H insertion.On the other hand,the Wolff rearrangement of the α diazo carbonyl compounds catalyzed by Ag(Ⅰ) has been applied to the efficient synthesis of optically pure γ lactams.

α 重氮羰基化合物在不同条件下的分解反应 ,在有机合成中有多种多样的应用 ,因此引起人们的广泛关注。本项工作应用物理有机化学的经典方法 Hammett线性自由能相关对在有机合成中已得到广泛应用的Rh(Ⅱ ) 卡宾分子内C H插入反应的机理进行了深入的探讨。在α 重氮羰基化合物的合成应用方面 ,发现了Cu(acac) 2 可以有效地催化α 重氮羰基化合物分解并发生选择性的分子内N H键插入反应。此外 ,应用α 重氮羰基化合物在Ag(Ⅰ )催化剂的作用下的Wolff重排反应可以有效地合成光学纯的γ 内酰胺。

 
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