催化作用

Dipropargylfluorene was prepared by the reaction of fluorene and propargyl bromide with the catalyst of NaOH/PhCH2N+Me3Cl in 85﹪ yield.

芴与炔丙基溴在NaOH/PhCH2N+Me3Cl催化作用下反应生成85﹪的二炔丙基芴。

"For his discoveries in connection with the biological combustion processes, with special reference to vitamin C and the catalysis of fumaric acid"

1937年圣捷尔吉·奥尔贝特匈牙利&与生物燃烧过程有关的发现，特别是关于维生素C 和延胡索酸的催化作用&

The reaction of 4-bromaophenol and geranic acid in the presecnce of p-TsOH afforded 4-bromophenolα-cyclogeranoate in which cyclization of geranic acid toα-cyclogeranic acid was followed by esterification ofα-cyclogeranic acid with p-bromophenol.

对溴苯酚与香叶酸在p-TsOH催化作用下发生了香叶酸向α-环香叶酸环化、α-环香叶酸环与对溴苯酚的酯化，得到了唯一产物α-环香叶酸对溴苯酯，产率68%。

The paper mainly studies the catalytic effect of crown ether for Darzens glycidic ester condensation of aromatic aldehydes with ethyl chlorocetate in mixed sovent system.

本文报道了在混合溶剂中冠醚催化作用的 Darzens 酯缩合反应，并合成了四个芳族缩水甘油酸酯类化合物。

A chemical substance present in the cells of bioluminescent organisms, such as fireflies, that produces an almost heatless, bluish-green light when oxidized under the catalytic effects of luciferase.

荧光素存在于生物性发光有机体中的一种化学物质，它在荧光素酶催化作用下氧化时发生几乎没有热量的蓝绿光

A chemical substance present in the cells of bioluminescent organisms,such as fireflies ,that produces an almost heatless,bluish - green light when oxidized under the catalytic effects of luciferase.

荧光素存在于生物性发光有机体中的一种化学物质，它在荧光素□催化作用下氧化时发生几乎没有热量的蓝绿光

Mixed-addenda heteropolyacid ; catalysis ; 2-octanol ; hexa noic acid

磷、钼、钒多元杂多酸；催化作用；仲辛醇；己酸

The results indicated that excellent yields of bis(indol-3-yl)methanes were obtained when indoles reacted with aldehydes and cyclo-ketones catalyzed by 20 mol% DBSA in water.

结果表明：在20mol％的DBSA的催化作用下，吲哚与芳香醛、脂肪醛和脂环酮高产率得到相应的双吲哚衍生物。

Sulfur compounds in the diesel were selectively derived into methylsulfonium salts by reacting with iodomethane in the presence of silver tetrafluoroborate, and characterized by positive-ion electrospray ionization fourier transform ion cyclotron resonance.

在四氟硼酸银的催化作用下，以碘甲烷对直馏柴油进行甲基衍生化反应，使其中的有机硫化物转变成极性较强的锍盐，再用电喷雾－傅立叶变换离子回旋共振质谱仪进行检测。

The kinetics of iridium catalyzed oxidation of isobutyl alcohol by cerium in aqueous sulphuric acid medium has been investigated by titrimetric technique in the temperature range of 25~40℃.

在酸性介质中用氧化还原滴定法研究了鈰离子在痕量铱离子催化作用下，於25~40℃区间氧化异丁醇的反应动力学。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！