查询词典 cyanoacetate

The article proposed a method of the gas chromatographic determination for methyl cyanoacetate and intermidiates.

提出了用 6 。5 %吐温+ 5 。5 %邻苯二甲酸二壬酯涂于 10 2白色硅烷化担体上的不锈钢色谱柱，对氰乙酸甲酯合成的中间体和产品进行定量分析，取得较满意的效果。

Reaction of [60] fullerene with malononitrile and ethyl cyanoacetate with the aid of Mn 〓·2H〓O produced methanofullerenes.

在以上反应中，多加成都是可以避免的，高产率的得到一些易分离的C〓的加成产物。

In contrast to the previous work in which the ILs were used as solvents,[14,15,21] we observed that when this IL was used in a catalytic amount, the Knoevenagel condensation between ethyl cyanoacetate or malononitrile and carbonyl compounds (Scheme 1) could be performed with high efficiency.

和之前离子液体被用作溶剂的工作作为对比，[14，15，21]我们发现使用催化剂量的这种离子液体时，氰基乙酸乙酯或丙二腈和羰基化合物之间的Knoevenagel缩合(图示1)可以体现出高效率。

Cycloalkylation of diethyl malonate and ethyl cyanoacetate with alkyl halide was investigated in the presence of toluene.

以甲苯为溶剂及带水剂，用粉末K2CO3代替常规使用的乙醇钠，在季铵盐和聚乙二醇混合相转移催化剂的存在下，含有活泼氢的丙二酸二乙酯和氰乙酸乙酯与二卤代物进行缩合反应，得到相应的环化物。

Catalyzed by KF-Al2O3, Knoevenagel condensation of benzaldehyde with ethyl cyanoacetate under microwave irradiation without solvent has been found to proceed with high yield.

采用KF-Al2O3为催化剂，在无溶剂微波辐射下苯甲醛与氰基乙酸乙酯发生 Knoevenagel 缩合反应，得到了较高的产率，并考察了反应条件对产率的影响。

The basic functionalized ionic liquid, 1 -butyl-3-methylimidazolium hydroxide OH, was prepared and used to catalyze the Knoevenagel condensation of aromatic aldehydes with malononitrile or ethyl cyanoacetate.

合成了碱性功能化离子液体氢氧化1-丁基－3-甲基咪唑，研究了将其作为催化剂催化芳香醛和丙二氰、氰基乙酸乙酯的Knoevenagel缩合反应。

The propanedinitrile is synthesised from ethyl cyanoacetate by amination and elimination reaction.

由氰乙酸乙酯与氨反应生成氰乙酰胺，再经过消除反应制得丙二腈。

Chapter 3: Synthesis of 2-aroyl-l,3,5-triaryl-4-carbethoxy-4-cyanocyclohexanols from chalcones with ethyl cyanoacetate is carried out in excellent yields with KF/basic alumina as catalyst under ultrasound irradiation.

第三章：研究了超声辐射下，以碱性氧化铝固载氟化钾为催化剂，利用查耳酮和氰乙酸乙酯合成2-芳酰基-1，3，5-三芳基-4-乙酯基-4-氰基环己醇。

Continuous distillation processes including three-tower,four-tower and five-tower for separation of methyl cyanoacetate were proposed to replace the conventional batch distillation process.

针对氰乙酸甲酯传统的间歇精馏分离过程，提出了连续精馏分离氰乙酸甲酯的三塔、四塔和五塔工艺流程，并对3种分离流程进行工艺分析，确定了连续精馏五塔分离工艺。

The basic functionalized ionic liquid, 1-butyl-3-methylimidazolium hydroxide, was prepared and used to catalyze the Knoevenagel condensation of aromatic aldehydes with malononitrile or ethyl cyanoacetate.

合成了碱性功能化离子液体氢氧化1-丁基-3-甲基咪唑，研究了将其作为催化剂催化芳香醛和丙二氰、氰基乙酸乙酯的Knoevenagel缩合反应。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新