甲苯氧基

The originalprocedure has subsequently been replaced by milder and more environmentallyfriendly conditions. We tried to alkylate 3,4,5-trimethoxytoluene by2-allylphenylbenzyl ether in the presence of N-bromosuccinimide.

本实验是在溴代琥珀酰亚胺的作用下使2-烯丙基苯基苄基醚产生苄正离子，苄正离子亲电进攻3，4，5-三甲氧基甲苯从而进行傅氏烷基化反应的。

Rate constants of oxidation reaction of anethole to anisaldehyde by Ceric Sulfate at different temperature(15-35℃)were measured.

制备茴香醛是用对甲氧基甲苯作为原料氧化合成茴香醛，[2，3]但近年石油化工原料价格猛涨，因而以我国广西盛产的茴香油为原料制备茴香醛的方法得以重视[4-9]。

However, in the case of TsN〓 withsilyl ketene acetals, an unexpected alkoxy migration occurred.

而且在研究对甲苯磺酰叠氮和silyl ketene acetals的对比反应中，我们还发现了烷氧基迁移的现象。

The mechanism of dioxygen oxidation of 4-nitrotoluene-2-sulfonic acid to 4,4'-dinitrostilbene-2,2'-disulfonic acid in alkali solution under mild condition was investigated.

探讨了在温和条件下在碱的水溶液中氧气液相氧化 4-硝基甲苯- 2 -磺酸制取 4，4'-二硝基二苯乙烯- 2 ，2 '-二磺酸的反应机理，发现 4-硝基甲苯- 2 -磺酸在碱作用下发生离子化生成 4-硝基- 2 -磺酸基苄基阴离子，然后被活化的分子氧氧化成 4-硝基- 2 -磺酸基苄基自由基是反应的关键步骤。

The mechanism of outside cell reaction of electrosynthesis of p-methoxybenzaldehyde and p-bromobenzaldehye is studied by Fourier-transform infrared absorption spectra.

利用红外光谱研究了槽外合成对甲氧基苯甲醛和对溴苯甲醛的反应机理，结果证明：在Ce4+与对取代甲苯的氧化反应中，苯环上甲基被Ce4+氧化的难易受苯环上对位取代基的影响。

Ib was synthesized by condensation of phthalic anhydride with 2-methylresorcinol in fused AlCl〓/NaCl (5∶1), followed by selective acetylation, methylation, NBS bromination and condensation with sodium ethoxide.

邻苯二甲酸酐在熔融的三氯化铝-氯化钠(5：1)中和-2，6-二羟基甲苯环合得1，3-二羟基-2-甲基蒽醌〓后经选择性乙酰化、甲基化、NBS溴化、乙醇钠缩合得1-甲氧基-2-乙氧甲基-3-羟基蒽醌。

The 5-benzyloxy-2-nitrotoluene is an organic intermediate to prepare indoles by Reissert indole synthesis.

2-硝基-5-苄氧基甲苯是有机中间体，可以进一步采用Reissert法合成吲哚类化合物。

Methods:Purchased spherical silica particles (5 μm) were refluxed in anhydrous toluene with vinyl-triethoxysilane for 18 h, to modify the surface with vinylsilyl groups.

将商品球形硅胶颗粒(粒径5μm)与乙烯基三乙氧基硅烷通过在无水甲苯中回流18 h，进行硅烷化修饰。

By one-pot method,with p-toluenesulfonic acid as catalyst,trimethyl orthoformate and cyclohexanone reacted in isopropanol to form 1,1-dimethoxycyclohexane,which,without separation,reacted furthur with isopropanol to form the title compound by distilling off the low-boiling product.

用一锅法，以对甲苯磺酸为催化剂，在异丙醇中原甲酸三甲酯与环己酮反应，其产物不经分离直接与异丙醇交换，得到1，1-二异丙氧基环己烷。

The mechanism of dioxygen oxidation of NTS to DNS in alkali solution under mild condition was inquired into. The result showed that the key step in the preparation of DNS from NTS was the formation of 4-nitro-2-sulfobenzyl anion as a result ionization of NTS in strong alkali and then oxidization to 4-nitro-2sulfobenzyl radical by activated dioxygen.

探讨了在温和条件下于碱的水溶液中氧气液相氧化4-硝基甲苯-2-磺酸制取4，4'-二硝基二苯乙烯-2，2'-二磺酸的反应机理，发现4-硝基甲苯-2-磺酸在碱作用下发生离子化生成4-硝基-2-磺酸基苄基阴离子，然后被活化的分子氧氧化成4-硝基-2-磺酸基苄基自由基是反应的关键步骤。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。