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o-h insertion reaction
相关语句
  o-h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
     Copper-Carbenoid Mediated O-H Insertion Reaction: An Efficient Method for the Synthesis of Ethyl 2-(2-ethoxy-2-oxoethoxy)-Propionate
     铜络合物催化的卡宾O-H插入反应:α-甲基-缩二乙醇酸二乙酯的合成
     Ethyl diazoacetate (EDA) undergoes a facile bis (salicylaldehydato) copper (Ⅱ) carbenoid mediated O-H insertion reaction with ethyl lactate to afford the title compound.
     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α-甲基-缩二乙醇酸二乙酯。
  o—h插入反应
     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
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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.The effects of catalyst,reaction temperature as well as the ratio of ethyl lactate and EDA on the insertion yield were discussed.Under optimized reaction conditions the title compound was obtained to be a 69% yield.The...

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.The effects of catalyst,reaction temperature as well as the ratio of ethyl lactate and EDA on the insertion yield were discussed.Under optimized reaction conditions the title compound was obtained to be a 69% yield.The yield of this novel process is 10% higher than that of classical Williamson reaction.The purity of product is over 98%.The mild reaction conditions are more satisfactory than Williamson reaction.

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。讨论了催化剂、反应温度和物料比例对插入反应收率的影响,在优化反应条件下产率为69%。与原工艺采用的Williamson反应相比,反应收率提高10%,产品纯度大于98%,而反应条件更温和。

This study provided a more facile process in place of Williamson reaction for the synthesis of flavor allyl cyclohexoxyacetate and allyl amyl glycolate.Ethyl diazoacetate(EDA) undergoes a facile bis(salicylaldehydato) copper carbenoid mediated O—H insertion reaction with cyclohexanol and isoamyl alcohol to afford ethyl 2-cyclohexyloxy-acetate(Ⅰ) and ethyl 2-(3-methyl-2-butyloxy)-acetate(Ⅱ).These compounds were used as synthetic precursor for title compounds.The effects of catalyst,reaction...

This study provided a more facile process in place of Williamson reaction for the synthesis of flavor allyl cyclohexoxyacetate and allyl amyl glycolate.Ethyl diazoacetate(EDA) undergoes a facile bis(salicylaldehydato) copper carbenoid mediated O—H insertion reaction with cyclohexanol and isoamyl alcohol to afford ethyl 2-cyclohexyloxy-acetate(Ⅰ) and ethyl 2-(3-methyl-2-butyloxy)-acetate(Ⅱ).These compounds were used as synthetic precursor for title compounds.The effects of catalyst,reaction temperature as well as the ratio of alcohol and EDA on insertion yield were discussed.Under optimized reaction conditions the compounds(Ⅰ) and(Ⅱ) were respectively obtained in an 83% and a 79% reaction yield.

提供了一种更温和的方法代替Williamson反应制备香料环己氧基乙酸烯丙酯和异戊氧基乙酸烯丙酯。采用重氮乙酸乙酯(EDA)分别与环己醇和异戊醇在二水杨醛铜催化作用下进行O—H插入反应合成了上述香料的前体化合物环己氧基乙酸乙酯和异戊氧基乙酸乙酯,研究了催化剂、反应温度和物料比例对插入反应收率的影响,在优化的反应条件下二者的反应收率分别为83%和79%。

>=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 synthetic precursor for flavors. The effects of catalyst, reaction temperature as well as the ratio of ethyl lactate and EDA on insertion yield were discussed. Under optimized reaction conditions title compound was obtained in a 69% yield. This etherification of hydroxylic compounds with...

>=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 synthetic precursor for flavors. The effects of catalyst, reaction temperature as well as the ratio of ethyl lactate and EDA on insertion yield were discussed. Under optimized reaction conditions title compound was obtained in a 69% yield. This etherification of hydroxylic compounds with copper carbenoid is an excellent alternative to the classical Williamson reaction. The mild reaction conditions render this process highly suitable for the etherification of multifunctional hydroxylic compounds.

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α-甲基-缩二乙醇酸二乙酯。该化合物可作为香料呋喃酮的合成前体。催化剂、反应温度和物料比例对插入反应产率的影响被讨论,在优化的反应条件下产率为69%。与经典的Williamson反应相比,羟基化合物和卡宾的醚化反应条件更温和,很适合含有多个官能团的羟基化合物的醚化反应。

 
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