查询词典 sulfur chloride

Benzoyl chloride was treated with potassium selenocyanate in dichioromethane by using polyethylene glycal-400 as the solid-liquid phase transfer catalyst to yield the corresponding benzoyl isoselenocyanate. This intermediate did not need to be isolated and directly reacted with arylamines, affording the N-benzoyl-N'-arylselenoureas 2a~2p. These compounds were characterized by IR, 1H NMR spectra and elemental analysis and the single crystal structure of 2k has been confirmed by X-ray crystallographic analysis.

以PEG-400为固液相转移催化剂，通过苯甲酰氯与硒氰酸钾反应合成了中间体苯甲酰基异硒氰酸酯，该中间体不需分离，直接与芳胺反应，得到N-苯甲酰基－N'-芳基硒脲(2a~2p)，这些化合物用1H NMR，IR及元素分析进行了表徵，并用X射线单晶衍射确定了化合物2k的单晶结构。

The optimal operation condition of Friedel-Crafts acylation for product Ⅰ was determined by orthogonal experiment: 0.02mol N-ethyl- carbazol, n Benzoyl chloride/n N-ethyl- carbazol=1.2, n AlCl3/n N-ethyl- carbazol=1.2 , at 25 oC for 3.5h. The yield was 94.6%.

通过正交设计实验，探讨了产物Ⅰ的Friedel-Crafts 酰化的最佳反应条件：N-乙基咔唑为0.02mol时，反应物苯甲酰氯与N-乙基咔唑摩尔配比为1.2。，催化剂AlCl3与N-乙基咔唑摩尔配比为1.2， 25℃下反应3.5h，产率可达94.6%。

A new organic compound:N,N'-bis(1,10-phenanthroline-2-formacyl)-4,4'-diamino-diphenylmethane was synthesized via oxidation,esterification,substitution,hydrolysis, amidation of 1,10-phenanthroline as the starting material with chemical reagents (hydrogen peroxide,benzoyl chloride,potassium cyanide,sodium hydroxide solution,4,4'-diamino-diphenylmethane).

以邻菲啰啉为起始原料，与双氧水反应合成邻菲啰啉-N-氧化物，接着与苯甲酰氯、氰化钾、NaOH水溶液一一反应合成中间体邻菲啰啉-2-甲酸，再与4，4′-二氨基苯基甲烷进行酰胺化反应合成目标产物。

Benzoyl chloride, phthaloyl dichloride, isophthaloyl dichloride and terephthaloyl dichloride were reacted with cinchona alkaloids to form 16 esters type catalysts 4a-d, 5a-d, 6a-d and 7a-d.

1对于溴乙酰甲酸乙酯为底物的反应，这类以酯键形成的金鸡纳生物碱衍生物表现出的不对称诱导作用不令人满意(22-75%ee)。

L-Phenylalanine was then obtained by alkylation of N- glycine ethyl ester with benzyl bromide in the presence of an asymmetric phase-transfer catalyst-N-benzyl-cinchonine chloride, followed by hydrolysis of the resulting product.

以甘氨酸乙酯盐酸盐和二苯甲酮为起始原料合成了N-二苯亚甲氨基乙酸乙酯，后者在手性相转移催化剂-N-苄基氯化辛可宁诱导下与烷基化试剂溴化苄发生不对称相转移催化烷基化反应，水解得到L-苯丙氨酸。

The carbon tube ubstituted by benzyl chloride which is manufactured in the invention can adopt free radical addition reaction.

在本发明中制备苄基氯取代的碳管可以采用自由基加成反应。

The kinetic model of consecutive reaction for chlorination of benzyl chloride was built by analyzing the reaction mechanism and macroscopic stage.

摘 要：通过运用新型的内环流反应器对氯化苄光氯化反应机理和宏观状态的分析，建立了氯化苄氯化的连串反应动力学模型。

Aim To study the synthesis of phase transfer catalyst-triethyl benzyl ammonium chloride and its catalytic activity in phase transfer catalytic reactions.

目的 研究相转移催化剂TEBAC（Triethyl Benzyl Ammonium Chloride，三乙基苄基氯化铵）的合成以及在相转移过程中的催化性能。

Results showed that there are some differences in purity and yield among those 5 methods. Both benzyl chloride method and proteinase K method have better yield, but the purity of the DNA by CTAB method is better than that of others.

结果表明：五种方法所提的DNA纯度及产率有差别，氯化苄法和蛋白酶K法的产率要高于另外三种方法，但CTAB法所提DNA纯度最高。

The optimum conditions were obtained: the amounts of NaOH solution,quaternary ammonium and benzyl chloride are respectively 16 mL,0.4 g and 15 mL; the reaction temperature and time are 120 ℃ and 3 h.

在NaOH溶液用量16 mL，反应温度120 ℃，季铵盐用量0.4 g，反应时间3 h，氯化苄用量15 mL的条件下，竹纤维的接枝率达143.68 %。

In other research, chondroitin is being investigated for use in several other conditions.

在其它研究，软骨素被调查用於几个其它情况。

They would make fun of him for having to work.

他们拿他的工作来开玩笑。