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phase transfer condition
相关语句
  相转移条件
     The kinetics of H2O2 decomposition catalyzed by Na2HPW12O40 under the phase transfer condition has been studied.
     在相转移条件下研究了由Na_2HPW_(12)O_(40)(简写为PW_(12))催化的H_2O_2分解反应动力学。
短句来源
     The copper(Ⅰ)catalyzed coupling reaction of substituted propargyl tosylate with propargyl alcohol and 2,5,8-triyne alcohoi proceeds conveniently at room temperature to give 2,5- diyne alcohol and 2,5,8-diyne alcohol under phase transfer condition.
     Cu(Ⅰ)催化和相转移条件下,丙炔醇与取代丙炔醇的对甲苯磺酸酯的偶联反应,在室温下可方便地制备2.5-二炔醇和2,5.8-三炔醇。
短句来源
     Studies on the Coupling Reaction of Terminal Alkynes under Copper(I) and Phase Transfer Condition
     相转移条件下Cu(I)催化的末端炔的偶联反应研究
短句来源
     STUDY ON ALLYLIC OR PROPARGYLIC COUPLING REACTION OF TERMINAL ALKYNE UNDER COPPER (Ⅰ)CATALYSIS AND PHASE TRANSFER CONDITION
     Cu(Ⅰ)催化及相转移条件下末端烯(炔)丙基化偶联反应研究
短句来源
     Objective : To study the allylic or propargylic coupling reaction of terminal alkyne under copper (Ⅰ)catalysis and Phase transfer condition.
     目的:研究CU(Ⅰ)催化及相转移条件下,末端烯(炔)丙基化偶联反应。
短句来源
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  “phase transfer condition”译为未确定词的双语例句
     Studies on Organoarsenic Compounds(XV)——Synthesis of (4-Ethoxycarbonylphenyl)rnethyltriphenylarsonium Bromide and Its Reaction with α,β-Unsaturated Ketones Under Phase Transfer Condition
     有机胂化合物的研究(ⅩⅤ)——溴化(4-乙氧羰基苯基)甲基三苯鉮的合成及其与α,β-不饱和酮的相转移反应
短句来源
     Studies on organoarsenic compounds ⅩⅥ.Reaction of(4-ethoxycarbonylphenyl)methylenetriphenylarsonium bromide with arenealdehydes at phase transfer condition Tao Wentan.
     有机胂化合物的研究ⅩⅥ.溴化(4-乙氧羰基苯基)亚甲基三苯基鉮与芳醛的相转移反应
短句来源
     Two sex pheromone components of the winter moth (Operophtera brumata L.(Lepidoptera: Geometridae)), (3Z, 6Z, 9Z)-3, 6,9-nonadecatriene and (6z, 9Z ) -6.9- nonadecadiene, were conveniently synthesized via the copper(Ⅰ) catalyzed coupling reaction of substituted propargylic tosylate and 1-alkyne under the aolid-liquid phase transfer condition.
     MOREFACILESYNTHESESTOTHESEXPHEROMONECOMPONENTSOFTHEWINTERMOTH(OPEROPHTERABRUMATAL.(LEPIDOPTERA:GEOMETRIDAE):(3Z,6Z,9Z)-3,6,9-...
短句来源
     In this paper,polyethylene Glycol(PEG)was first used as phase transfer ca- talyst for Reimer-Tiemann reaction. The results of the experiments show that PEG is a good liquid-liquid transfer catalyst. Under phase transfer condition with Ethanal as solvent and PEG-600 as phase transfer catalyst,the yield of salieyl- ldehyde+P-hydroxylenzaldehyde is 93.9%(besed on phonol consumed)and 51.8% (besed on Chloroform).
     本工作首先将聚乙二醇用作Reimer-Tiemann反应的相转移催化剂,实验结果表明:采用聚乙二醇-600为相转移催化剂,乙醇作溶剂时,羟基苯甲醛(水杨醛和对羟基苯甲醛)产率为93.9%(以耗酚计)和51.8%(以氯仿计)。
短句来源
     Diethyl iminodicarbonate was treated with potassium carbonate in DMF under solid-Liquid phase transfer condition and the reaction mixture was then allowed to react with various alkylating agents, such as methyl chloroacetate, chloroacetonitrile, 1,3-dibromopropane and a,a'—dichloro P—xylene, by methods A,B or C.
     作用物(1)在DMF中经碳酸钾处理,然后使之与种种烷基化试剂,如:氯乙酸甲酯、氯乙腈、1,3二溴丙烷,+x,x′二氯对二甲苯等,按方法A,B或C反应。
短句来源
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  相似匹配句对
     Phase-transfer Catalyst
     相转移催化剂
短句来源
     SELECTION OF PHASE TRANSFER CATALYSTS
     相转移催化剂的选择
短句来源
     lcer condition on L.
     lder条件,证明这个可数集条件是充要条件,并且得到了它的另外二个等价条件。
短句来源
     and in stable condition.
     稳定条件下风速拟合公司为U=U_(10)(H/10)~(2.86)。
短句来源
     condition and implement the p.
     条件及 p.
短句来源
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In this paper are described the facile syntheses of unsaturated aldehydes,ketones and amides which involve the reaction of a variety of aldehydes with arsoniumsalts in the presence of K_2CO_3 under phase transfer condition.The general formulationis:R(CH=CH)_nCHO+Ph_3(?)s-CH_2(CH=CH)_mX Br-(?)R(CH=CH)_(n+m+1)Xn=0,1;m=0,1 and X=CHO,COCH_3,CONR~1R~2 When m=0,the reactions are highly stereoselective in E configuration;whilem=1,the reactions are in favor of E configuration.Z configuration can be isomerizedto...

In this paper are described the facile syntheses of unsaturated aldehydes,ketones and amides which involve the reaction of a variety of aldehydes with arsoniumsalts in the presence of K_2CO_3 under phase transfer condition.The general formulationis:R(CH=CH)_nCHO+Ph_3(?)s-CH_2(CH=CH)_mX Br-(?)R(CH=CH)_(n+m+1)Xn=0,1;m=0,1 and X=CHO,COCH_3,CONR~1R~2 When m=0,the reactions are highly stereoselective in E configuration;whilem=1,the reactions are in favor of E configuration.Z configuration can be isomerizedto that of E by treating with catalytic amount of iodine.By means of our method,some biologically active natural products have been synthesized.The simplicity of ourmethod,the mildness of the reaction conditions,the high stereoselectivity and the excel-lent yields enable this method to be a practical approach to the syntheses of polyenals,polyenones,polyenamides and related natural products.

本文报道有机鉮盐和各种不同的醛在固-液相转移条件下,以碳酸钾为碱,简便合成共轭不饱和醛、共轭不饱和酮以及共轭不饱和酰胺。其反应通式如下:(?)n=O,1;m=0,1 and(?)X=CHO,COCH_3,CONR~1R_2当m=0时,产物几乎全部是2E 或2E,4E 产物,当m=1时,2E,4E 或2E,4E,6E 产物为主,Z 构型产物在催化量碘作用下易异构化成 E 构型产物。以此合成方法,还合成了一些具有生物活性的天然产物。该合成方法操作简便,反应条件温和,产物高度立体选择性,产率优良,这为多烯醛,多烯酮,多烯酰胺以及有关天然产物的合成提供了实用途径。

In this paper,polyethylene Glycol(PEG)was first used as phase transfer ca- talyst for Reimer-Tiemann reaction.The results of the experiments show that PEG is a good liquid-liquid transfer catalyst.Under phase transfer condition with Ethanal as solvent and PEG-600 as phase transfer catalyst,the yield of salieyl- ldehyde+P-hydroxylenzaldehyde is 93.9%(besed on phonol consumed)and 51.8% (besed on Chloroform).And we were found that the synergism of C_2H_5OH and PEG.

本工作首先将聚乙二醇用作Reimer-Tiemann反应的相转移催化剂,实验结果表明:采用聚乙二醇-600为相转移催化剂,乙醇作溶剂时,羟基苯甲醛(水杨醛和对羟基苯甲醛)产率为93.9%(以耗酚计)和51.8%(以氯仿计)。并发现在该反应中聚乙二醇和乙醇具有协同作用。

The kinetics of H2O2 decomposition catalyzed by Na2HPW12O40 under the phase transfer condition has been studied. The catalyst and the phase transfer catalyst chlorocetyl pyridine both react with H2O2 to form an intermediate compound, peroxo-tungsten complex. This intermediate compound is dissolved readily in chloroform, but unstable in chloroform and decomposes to yield oxygen. The characteristic of the reaction in two phases has been analyzed deeply. Based on the experimental results,...

The kinetics of H2O2 decomposition catalyzed by Na2HPW12O40 under the phase transfer condition has been studied. The catalyst and the phase transfer catalyst chlorocetyl pyridine both react with H2O2 to form an intermediate compound, peroxo-tungsten complex. This intermediate compound is dissolved readily in chloroform, but unstable in chloroform and decomposes to yield oxygen. The characteristic of the reaction in two phases has been analyzed deeply. Based on the experimental results, the possible mechanism is proposed.

在相转移条件下研究了由Na_2HPW_(12)O_(40)(简写为PW_(12))催化的H_2O_2分解反应动力学。相转移催化剂氯代十六烷基吡啶与H_2O_2作用生成的含活性氧的中间化合物,在CHCl_3中溶解度很大但不稳定,可分解放出氧气。在此基础上,深入分析了两相反应的特点,提出了反应机理,首次推导出其反应动力学方程,并验证了与实验结果的一致性。

 
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