三苯甲基

Second,2-methyl-1-phenyl-1-pentanone was synthesized with benzene and isocaproyl chloride in the presence of anhydrous aluminum chloride as a catalyst .

其次，以无水三氯化铝为催化剂，苯与2-甲基戊酰氯反应合成了2-甲基-1-苯基-1-戊酮

New contributions of this work are as follows:(1). Preparation of Spherical MgCl_2-Supported Late-Transition Metal Catalysts for Ethylene PolymerizationFacile and effective immobilization of late-transition metal catalysts. 2,3-bis-(2,6-diisopropylphenyl) butane diimine nickel dibromide (1) and 2,6-bis-[1-(2,4,6-trimethylphenylimino)ethyl]pyridine iron dichloride (2), for ethylene polymerization has been achieved, using spherical MgCl_2 supports obtained by thermal dealcoholization of MgCl_2·2.56C_2H_5OH, and the effects of dealcoholization temperature on supported late-transition metal catalysts and the properties of resultant polymers were studied, the results indicated that:1.Supports with appropriate mechanical strength, high surface area and high porosity could be prepared by thermal dealcoholization of spherical MgCl_2·2.56C_2H_5OH supports; 2.BET, XRD, IR, SEM, GPC and DSC analyses indicate that the activities of the supported late-transition metal catalysts and the properties of resultant polymers are strongly dependent on the dealcoholization temperature.

本工作的新贡献如下：(1)、球形氯化镁负载后过渡金属催化荆催化乙烯聚合本文将配合物2，3-双(2，6-二异丙基苯亚胺)丁烷二溴化镍(1)和配合物2，6-二[1-(2，4，6-三甲基苯亚胺)乙基]吡啶二氯化铁(2)分别直接负载于经不同热脱醇温度处理的球形氯化镁载体上，研究了氯化镁载体的脱醇温度对负载化后过渡金属催化剂及其聚合物的影响，研究表明：1、通过对球形MgCl_2·2.56C_2H_5OH载体进行热脱醇处理，可以获得合适机械强度、较高比表面积和较高孔隙度的球形氯化镁载体；2、BET，XRD，IR，SEM，GPC和DSC研究表明，脱醇温度极大地影响负载后过渡金属催化剂的活性和聚合物的性能。

New contributions of this work are as follows:(1). Preparation of Spherical MgCl_2-Supported Late-Transition Metal Catalysts for Ethylene Polymerization Facile and effective immobilization of late-transition metal catalysts. 2,3-bis-(2,6-diisopropylphenyl) butane diimine nickel dibromide (1) and 2,6-bis-[1-(2,4,6-trimethylphenylimino)ethyl]pyridine iron dichloride (2), for ethylene polymerization has been achieved, using spherical MgCl_2 supports obtained by thermal dealcoholization of MgCl_2·2.56C_2H_5OH, and the effects of dealcoholization temperature on supported late-transition metal catalysts and the properties of resultant polymers were studied, the results indicated that: 1.Supports with appropriate mechanical strength, high surface area and high porosity could be prepared by thermal dealcoholization of spherical MgCl_2·2.56C_2H_5OH supports; 2.BET, XRD, IR, SEM, GPC and DSC analyses indicate that the activities of the supported late-transition metal catalysts and the properties of resultant polymers are strongly dependent on the dealcoholization temperature.

本工作的新贡献如下：(1)、球形氯化镁负载后过渡金属催化荆催化乙烯聚合本文将配合物2，3-双(2，6-二异丙基苯亚胺)丁烷二溴化镍(1)和配合物2，6-二[1-(2，4，6-三甲基苯亚胺)乙基]吡啶二氯化铁(2)分别直接负载于经不同热脱醇温度处理的球形氯化镁载体上，研究了氯化镁载体的脱醇温度对负载化后过渡金属催化剂及其聚合物的影响，研究表明： 1、通过对球形MgCl_2·2.56C_2H_5OH载体进行热脱醇处理，可以获得合适机械强度、较高比表面积和较高孔隙度的球形氯化镁载体； 2、BET，XRD，IR，SEM，GPC和DSC研究表明，脱醇温度极大地影响负载后过渡金属催化剂的活性和聚合物的性能。

The same compounds can be characteristic compounds of Curculionidae and were 1,2- Benzenedicarboxylic acid, decyl hexyl ester, n-Eicosane and 1,2,4-Benzenetricarboxylic acid, 4-dodecyl dimethyl ester.

两种害虫蜡层和护蜡层共有成分分别是：1，2-苯二甲酸-1，2-（2-甲基-1）-丁醇二酯、正二十烷和1，2，4-苯三甲酸-（4-正十二醇酯）-1，2-甲二酯，它们可能具有象虫属的特征。

Using 9 fluorenylmethylchloroformate as a pre column derivatising agent, nine aromatic amines ( o toluidine, 4 chloro o toluidine, aniline, 2,4,5 trimethylaniline, p cresidine, p chloroaniline, 4 aminodiphenyl, o anisidine, 2 naphthylamine,) are separated and a quantitative analysis method is studied by means of RP HPLC.

以氯甲酸 9 芴基甲酯为柱前衍生试剂，对 9种单环芳香胺(邻甲苯胺、4 氯邻甲苯胺、苯胺、2 ，4 ，5 三甲基苯胺、3 氨基对甲苯甲醚、对氯苯胺、4 氨基联苯、邻氨基苯甲醚、2 萘胺)进行了高效液相色谱分离和定量分析方法研究。

SM6 and SM7 of uncrystal were analyzed through GC-MS, the results showedthat SM6 main contained unsaturated fatty aldehyde with fragrance, i.e.-2,4-decadienal(58%), tetradecanoic acid (55.78%), 2-decenal(50%), Phthalic acid isobutylundecyl ester(47%), 2, 4-Decadienal(41%), 2-Undecenal (31%), 2-Methyl-Z,Z-3, 13-octadecadi-enol(18.84%), and SM7 contained saturation alkanes, i.e. 1, 2-Benzenedicarboxylic acid, butyl cyclohexyl ester(23.90%), Triacontane(22.63%),Nonacosane(21.04%), Heptadecane(18.84%), Octacosane(13.58%). Toxicological experiments were done to insure the pigment safety.

并对紫红丝膜菌色素非晶体部分的黄色油状物SM6和紫色粉末物SM7作了GC-MS分析，结果显示SM6中主要为具有香气成分的不饱和脂肪醛，其中含量较高的依次为：-2，4-癸二烯醛(58％)、十四烷酸(55.78％)、2-癸烯醛(50％)、邻苯二甲酸异丁基十一烷酯(47％)、2，4-癸二烯(41％)、2-十一碳烯醛(31％)、2-甲基-Z，Z-3，13-十八碳二烯酸(18.45％)等；SM7中主要为饱和直链烷烃，其中含量较高的依次为：1，2-苯二羧酸丁基环己酯(23.90％)、三十烷(22.63％)、二十九烷(21.04％)、十七烷(18.84％)、二十八烷(13.58％)。

Gel-type cross-linked polystyrene-isocyanuric acid resin has been obtained by reaction of chloromethylated polystyrene with isocyanuric acid under the existence of triethylamine.

由氯甲基化低交联聚苯乙烯和异氰尿酸在三乙胺作用下反应，制得了凝胶型交联聚苯乙烯-异氰尿酸树脂，测定了该树脂对苯酚和间苯二酚在不同温度下的吸附等温线，依据Clapeyron-Clausius方程从吸附等温线计算出了吸附热，从热力学的角度论证了树脂是基于氢键键合和疏水作用而吸附苯酚和间苯二酚的。

Objective To modify the synthesis of Benzhydryl 2α- methyl - 2β- [ ( 1,2,3 -triazol - 1 - yl)- methyl ] penicillanate - 1,1 - dioxide, the key intermediate of β- lactamase in-hibitor tazobactam.

目的 改进β-内酰胺酶抑制剂泰唑巴坦关键中间体2α-甲基-2β[(1，2，3-三唑-1-基)-甲基]青霉烷酸砜二苯甲酯的合成。

UV spectra of the n -octanol gels formed by the three gelators indicate that the K bands of benzene rings are red shifted. It reveals that the π-π stack is one of the driving forces for the self-assembly of the gelators. The extent of red shifts of K bands depends on the amount of methyl groups in benzene rings which is in accord with the stabilities of the gels formed by such three gelators.

紫外吸收光谱表明，对比其溶液态，三种衍生物聚集体苯环的K带发生红移，表明π-π堆积作用是亚苄基山梨醇衍生物凝胶剂自组装的驱动力之一；红移的幅度随苯环上甲基数量的增加而增加，这与三种衍生物形成的分子凝胶的热稳定性相吻合。

Finally, N ethey[3,3 dimethyl spiralindoline naphthoxazine]was synthesized by the addition of 1 nitroso 2 naphthol also,the photochromic mechanism of the substance and its photochromic phenomenon in ethanol were studied.

报道了以苯肼和 3 甲基 2 丁酮为原料首先合成 2 ，3 ，3 三甲基吲哚，吲哚再与碘乙烷亲核取代，碱化得费舍尔碱，最后与 1 亚硝基 2 萘酚作用合成N 乙基 [3 ，3 二甲基螺吲哚啉萘并恶嗪 ]的全过程，并研究了该物质的变色机理以及在乙醇溶剂中的光致变色现

Now, however, all children continue in "comprehensive" schools, and the eleven-plus determines which courses of study the child will follow.

然而现在，所有的孩子都要在综合学校继续学习，所以这次考试只是决定他们将要学习哪些课程。

Cultivatable land , and led to a general recognition that development must not be carried at the cost of agriculture .

城区的迅速扩大在很多情况下侵占了宝贵的可耕地，使人们普遍认识到发展不能以牺牲农业为代价。