苯乙酮

A typical example is the oxidation of ethylbenzene to prepare acetophenone.

其中最有代表性的是乙苯氧化制苯乙酮。

The invention relates to a method of preparing acetophenone by ethylbenzene photocatalysis and oxidation, belonging to the technical field of organic synthesis application.

本发明涉及一种乙苯光催化氧化制备苯乙酮的方法，属于有机合成应用技术领域。

Under the optimal conditions 1.5×10~(-3 mol/L of 22, 1.0 MPa of O_2, 120℃, 20 h, the conversion of ethylbenzene was 37.8%, and the selectivity for acetophenone and 1-phenylethynol was 82.5% and 13.5% respectively.

在22浓度为1.5×10~(-3)mol／L，氧气压力为1.0 MPa，120℃反应20 h，乙苯转化率为37.8％，苯乙酮的选择性为82.5％，1-苯基乙醇的选择性为13.5％，锰配合物23次之。

Dihydroxy-7, 4′-dimethoxy-dihydrflavonol and -3, 5, 7 -trihydroxy-4′-methoxy- dihydrflavonol were synthesized by selective protection, condensation, epoxidation, cyclization and deprotection from 2, 4, 6-trihydroxyacetophone and anisaldehyde.

以2，4，6-三羟基苯乙酮和茴香醛为起始原料，经选择性保护、缩合、环氧化、关环等步骤首次完成了-3，5-二羟基-7，4′-二甲氧基二氢黄酮醇和-3，5，7-三羟基-4′-甲氧基二氢黄酮醇全合成。

The separate factor between S--α-phenyl ethylamine and acetophenone for all polymers was above one,and the maximum ofαwas 2.86.This indicated that all polymers had good selection.

各种印迹聚合物对于S--α-苯乙胺及其结构类似物苯乙酮的分离因子均大于1，最大达到2.86，显示出了很好的选择性。

A series of N -bonded donor-acceptor derivatives of phenothiazine containing phenyl, anisyl, pyridyl, naphthyl, acetylphenyl, and cyanophenyl as an electron acceptor have been synthesized.

合成了一系列的N10位取代的吩噻嗪给体受体衍生物，这些受体基团包括苯，苯甲醚，吡啶，萘，苯乙酮和苯甲腈。

In order to achieve a rapid and accurate selection for extractive distillation solvent, and to acquire 1,2,3-trimethylbenzene with high purity from solvent oil via extractive distillation, the UNIFAC model was used to calculate the relative volatility of 1,2,3-trimethylbenzene to indane (the mass ratio of 1,2,3-trimethylbenzene to indane is 4∶1) in five different solvents, acetophenone, di-2-octylhexyl phthalate, glycol, dimethyl sulfoxide,sulfolane at 17.47 kPa.

为了快速准确地选择萃取精馏溶剂，由190#溶剂油萃取精馏获取高纯度连三甲苯，运用UNIFAC模型，计算了质量比为4∶1的连三甲苯-茚满体系在苯乙酮、乙二醇、邻苯二甲酸二辛酯、二甲基亚砜和环丁砜5种溶剂中在17.47 kPa下的相对挥发度。

In our work, as a preliminary experiment, the N-phenacylisoquinolinium bromide was reacted with methlhydrazine in refluxed acetic acid. Unexpectedly, 2-methyl-1,2,3-triazole was obtained. The further study of this reaction led to a more simple starting material,α-bromoacetophenone to react with methylhydrazine, obtaining the same product.

我们在研究N-苯乙酰异喹啉溴化物与甲肼在冰醋酸中的反应时，意外地得到了2-甲基-4-苯基-1，2，3-三氮唑，经过进一步的研究发现α-溴代苯乙酮与甲肼也能得到同样的产物。

Evaluation of some Mannich bases of conjugated styryl ketones and related compounds versus the WiDr colon cancer in vitro.

朱志宏，徐秀娟。2，4-二羟基-3-芳氨基甲基苯乙酮和8-乙酰基-3-芳基-3，4-二氢-5-羟基-2H-1，3-苯并噁嗪的合成及其相互转化。

M Trifluoromethylacetophenone was synthesized by the reaction of acetic anhydride with the Grignard reagent of 3 bromo benzene prepared from trifluoromethylbenzene , in 40% overall yield.

以三氟甲基苯为原料，经过溴化、格氏反应后与乙酸酐反应合成间三氟甲基苯乙酮，总收率40%。

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