3Azocalix[4]arene was first synthesized by coupling reaction of calix[4]arenes with BF_4~-salt of p-nitrobenzene diazonium.

3通過和對硝基苯偶氮四氟硼酸鹽發(fā)生偶聯反應，在杯[4]芳烴上沿引入了偶氮基團辽宁熟妇高潮45分钟。

These experimental results indicate that the DNP technique is apowerful method to study organic solid materials containing unpairedelectrons.

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Mannich reaction occurred directly between arylamine and pyrroli- zinone on hydrogen chloride/ethyl alcohol solution.

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This paper presents the synthesis of three kinds of amine such as 2-(methyl- sulonyl)ethylamine,3-propylamine and 2--ethylamine via three different methods.

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The main compounds in the natural terpineol oil were eucalyptol, trans4thujanol, pisopropenyl toluene, cis4thujanol, linalool, camphor, borneol, 4terpineol,αterpineol and safrole.

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Conclusion］ M1 and M5 were suitable for the growth of Euonymus fortunei cutting.

結論］ 基質M1與M5比較適合扶芳藤插穗的生長。

Objective］ The best ratio of matrix for Euonymus fortunei cutting was researched.

［目的］研究扶芳藤扦插育苗的最佳基質配比女同视频自拍自自拍。

Using 2,4,6-〓 as phase-transfer catalyst, ten symmetrical azobenzene were prepared with a saturated solution of potassium ferricyanide in 2N aqueous potassium hydroxide and dichloromethane.

用2欧美性爱动态视频观看，4，6-三叔丁基苯酚為相轉移催化劑亚洲欧美日韩一区二区三区图片，芳胺類化合物在飽和鐵氰化鉀的氫氧化鉀溶液和二氯甲烷的兩相轉移催化下合成了10個對稱取代偶氮苯黄无码国产在线看下载，并對反應機理也做了合理的解釋。

The factors such as introduction of aromatic heterocycle with small delocalization energy, formation of acceptor-donor structure, and strong electron-donating or electron-withdrawing abilities of substituents lead to the high third-order nonlinear optical property.

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