• 乙醛帮助醛脱去羰基形成仅有碳氢原子组成碳氢化合

    The enzyme aldehyde decarbonylase helps remove this group to form a chain of hydrogen and carbon atoms--the hydrocarbon.

    youdao

  • 方法成功地应用大气羰基化合定量检测。

    The method was successfully applied to the quantitative analysis of carbonyl compounds in ambient air samples.

    youdao

  • 结果表明配合催化甲醇羰基化反应具有较好的活性选择性

    The results show that such complex has good catalytic activity and selectivity for catalytic methanol carbonylation.

    youdao

  • 醛类其他羰基化合,由于烷氧基离子稳定性容易通过本质上是负离子机理进行聚合

    Aldehydes and other carbonyl compounds are most easily polymerized by essentially anionic mechanisms on account of the stability of alkoxide ions.

    youdao

  • 此外,它除了还原双键以外可以用来还原各种不同有机化合硝基羰基氨基芳香族杂环化合羟基羧基

    Moreover, catalytic hydrogenation can be used to the reduction of a variety of organic compounds, such as nitro, carbonyl, amino, aromatic and heteroaromatic compound, hydroxy group and carboxy group.

    youdao

  • 挥发羰基化合卷烟主流烟气主要有害成分之一

    The volatile carbonyl compounds are one of most poisonous components in cigarette mainstream smoke.

    youdao

  • 金属羰基化合氧原子转移试剂两个方面讨论了影响CO取代反应速率各种因素

    Various factors relating to the metal carbonyls and to the o atom transfer reagents that effect the rates of CO substitution are discussed.

    youdao

  • 手性羰基络合很少用于芳香不对称转移氢化。

    Chiral carbonyl iron systems have seldom been used in asymmetric transfer hydrogenation of aromatic ketones.

    youdao

  • 结果表明查尔酮系列化合由于羰基存在溶剂溶质问极性作用、酸碱作用比较显著。

    The results show that the polarity and acid-base reaction is remarkable between the title compounds and the solvents because of the existence of carbonyl.

    youdao

  • 结合催化优势利用微生细胞催化不对称还原羰基化合可以有效制备这些手性

    Combining the advantages of biocatalysis in nonaqueous media, asymmetric reduction of corresponding carbonyl compounds using microbial cells is an efficient method to produce these chiral alcohols.

    youdao

  • 结果表明广州市区范围内不同时间不同的采样地点羰基化合浓度变化不大。

    The results showed that the concentrations had no pronounced changes between different sampling sites and times in the districts of Guangzhou.

    youdao

  • 本文综述羰基化合质子质子惰性溶剂中的极谱研究现状

    This paper discusses the current polarographic research of carbonyl compound in proton & proton inert solvent.

    youdao

  • 本文介绍二级一级胺和4 -氨基吡啶为共试剂的硝基化合羰基化反应情况

    In this paper carbonylation of nitro compounds with co-reagent based on secondary amine, primary amine and 4-aminopyridine is detailed.

    youdao

  • 近几年来,国外广泛地用于催化氧化醇类合成羰基化合研究

    In recent years, it was extensively used to investigate the synthesis of many carbonyl compounds by catalytic oxidation of alcohols at abroad.

    youdao

  • 选择性氧化醇类羰基化合有机合成中的一个重要反应,其在精细化学品工业具有关键作用

    The Selective oxidation of alcohols to the corresponding carbonyl compounds is a key process in organic synthesis and plays a central role in the fine chemicals industry.

    youdao

  • 表面的类氧化后,产生许多化合包括羟基羰基化合

    The surface lipids undergo oxidation, generating many compounds containing hydroxyl and carbonyl groups.

    youdao

  • 表面的类氧化后,产生许多化合包括羟基羰基化合

    The surface lipids undergo oxidation generating many compounds containing... hydroxyl and carbonyl groups.

    youdao

  • 车况燃油质量、高比例柴油车及气候等因素造成路边空气中羰基化合污染的重要原因。

    Vehicular maintenance, oil quality and high proportion of diesel-run vehicles may be top factors to cause higher concentrations of carbonyl pollutants in Guangzhou.

    youdao

  • 因为氧化脂肪中的羰基化合分子量比较它们通过多种技术分子量挥发性羰基化合中分离出来

    Because the carbonyl compounds in oxidized fats are of relatively high molecular weight, they can be separated by a variety of techniques from lower molecular weight volatile carbonyl compounds.

    youdao

  • 论文主要研究了水相中无机盐二氧化碳促进羰基化合丙基化反应

    This dissertation studied allylation reactions of carbonyl compounds promoted by inorganic salts or carbon dioxide in aqueous media.

    youdao

  • 酒类羰基化合风味有着重要影响

    Dicarbonyl compounds in wine had an important effect on flavor.

    youdao

  • 报道合型正方平面羰基配合催化甲醇羰基化反应机理研究

    The mechanism of methanol carbonylation catalyzed by a chelated square planar carbonyl rhodium complex was studied.

    youdao

  • 本文总结—铁混合金属羰基原子化合合成结构类型电子计数

    We discuss the syntheses, structural pattern and electron counting of six molybdenum-iron mixed metal carbonyl clusters.

    youdao

  • 作为电体的羰基作为亲核体的HCNO羰基化合反应

    Reactions of Carbonyl Compounds with the Carbonyl Group as an Electrophile with H, C, N and O Nucleophiles.

    youdao

  • 利用诱导效应指数建立一个羰基有机化合标准生成简单计算方法

    A simple method for calculating the standard heats of formation of organic compounds containing carboxide using the inductive effect index is built up.

    youdao

  • 应用纳米相中成功地促进多种羰基化合和巴豆基溴的丁烯基化反应,在时间内得到了高产率的高烯丙

    Indium, tin and bismuth nanoparticles successfully mediated crotylation of carbonyl compounds in water to afford the corresponding homoallylic alcohols with good to excellent yields in a short time.

    youdao

  • 涉及的底有酚、羰基化合醇和

    Substratesinclude phenols, carbonyl compounds, alcohols, and amines, etc.

    youdao

  • 因此一般认为秋冬季,大气中羰基化合来源主要汽车尾气夏季则汽车尾气大气光化学反应

    Therefore, vehicular exhaust was the primary source in autumn and winter while both vehicular exhaust and photochemical reactions were the major sources in summer.

    youdao

  • 因此一般认为秋冬季,大气中羰基化合来源主要汽车尾气夏季则汽车尾气大气光化学反应

    Therefore, vehicular exhaust was the primary source in autumn and winter while both vehicular exhaust and photochemical reactions were the major sources in summer.

    youdao

$firstVoiceSent
- 来自原声例句
小调查
请问您想要如何调整此模块?

感谢您的反馈,我们会尽快进行适当修改!
进来说说原因吧 确定
小调查
请问您想要如何调整此模块?

感谢您的反馈,我们会尽快进行适当修改!
进来说说原因吧 确定