查询词典 catalyzed

An intramolecular α-addition of hydroxy or amine-substituted electron-deficient alkyns catalyzed by phosphines was developed.

主要工作是利用我们小组发现的全碳1，3-偶极子在合成螺环化合物方面做了比较细致和深入的研究。

An intramolecular α-addition of hydroxy or amine-substituted electron-deficient alkyns catalyzed by phosphines was developed. An intramolecular β-addition of hydroxysubstituted 2-alkynoates trigged by the tributylphosphine was also achieved.

在上面的研究中发现低活性的亚甲基取代的环内酰胺的[3+2]环加成反应也能顺利进行，因此我们研究并实现了β-位取代的贫电子烯烃的环加成反应，进一步拓展了叔膦催化的[3+2]环加成反应。

With the oxidative rate of four aromatic compounds catalyzed by SLO under different conditions, the inhibitive rate and the 50% inhibitory concentration of these antioxidants for the oxidations were calculated, respectively.

根据不同条件下SLO对四种芳香化合物氧化的速度，计算出各调节物对SLO介导这类化合物氧化的抑制率及半数抑制浓度。

Reaction mechanism and network are similar to that of base-catalyzed reactions of nitriles examined in less severe conditions.

近临界水中亚氨基二乙腈的水解反应机理和普通条件下碱催化水解反应机理相似。

In the first part, rhodium acetate catalyzed 1, 3-dipolar reactions of 1-diazo-2-oxo-propylphosphonates with nitriles was studied.

在催化量的醋酸铑作用下，1-重氮-2-羰基丙基膦酸酯与芳香腈顺利进行反应，而对脂肪腈的反应则很复杂，没有得到预期产物。

In esterification of 2,6-NDA obtained from Henkel reaction of 1,8-naphthalenedicarboanhydride catalyzed non-cadmium catalyst zinc carbonate, the effect of process parameters like esterification catalyst and its amount used, reaction temperature and time, and methanol/anhydride molar ration, etc, was investigated.

在碳酸锌催化和二氧化碳气氛中1，8-萘二甲酸酐于300～340℃反应3～4小时，可以较高收率地获得2，6-萘二甲酸粗品，收率达到62％，该产物可以直接用于合成双酯的酯化反应中。

Comparing with the total fermented wine amino acid content reported in the literature, amino acid content in the crested ibis black rice wine was 5 times of beer, 5.4 times of red wine, 1.35 times of yellow rice wine, 2.18 times of sake, and 2.8 times of catalyzed-crock rice wine, the essential, semi-essential and taste amino acid contents were also the highest.

与文献中报道的发酵酒氨基酸总量相比是啤酒的5倍、红葡萄酒的5.4倍、黄酒的1.35倍、清酒2.18倍、沉缸酒的2.8倍，此外必需和半必需氨基酸的含量、味觉氨基酸含量与之比较也均为最高。

Technology of sulfuric acid catalyzed ethyl esterification of high acid value tuna oil was studied.

以浓硫酸为催化剂，对高酸值金枪鱼油进行了乙醇酯化工艺的研究。

Hanamaki tea production in the choice of raw materials required by the screening system, the selection tick, plastic, hard heap procedures required in the processing on its twist, press, stamp, roll, hammer process, and finally the formation of about 1.5 meters in diameter cylinder about 0.2 meters, situated at a cooler shelf, summer and autumn by 50 days around the sun, in natural conditions, catalyzed by its own fermentation, drying, smoking,"Heaven and Earth Aura, satisfied the universe the essence "in the body of the tea into the long-term period Fang Chen, Chen Fang longer, the better the quality, taste better.

花卷茶的生产在原料选择上需经筛制，拣剔、整形、拼堆程序，在加工上需经其绞、压、跺、滚、锤工艺，最后形成长约1.5米、直径为0.2米左右的圆柱体，置于凉架上，经夏秋季节50天左右的日晒夜露，在自然条件催化下，自行发酵、干燥，吸&天地之灵气，纳宇宙之精华&于茶体之内，进入长期陈放期，陈放越久，质量越好，品味更佳。

The effects of organic solvent, temperature and water activity were also investigated in PS IM catalyzed tranesterification of 2-chloro-1-phenylethanol with vinyl acetate.

并系统探讨了溶剂体系，温度以及水活度对PS IM催化拆分2-氯-1-苯乙醇的影响。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了