苯甲醛

The products were recrystallized by petroleum ether. The purity of 1,2 bis chlormethyl benzol was beyond 98%.

考察了邻二-苯在ZnSO4 催化剂存在下反应条件对合成邻苯二甲醛的影响。

The common chemical constituents were juniper camphor,1,3,3-trimethylcyclohex-1-ene-4-carboxaldehyde,borneol,α-curcumene,α-bisabolol,cis-caryophyllene,benzyl benzoate,methyl β,β-dimethylbenzenepropanoic acid ester,2,4-decadienal and heneicosane in the essential oil of the five cultivars' Hangjuhua.Among them,juniper camphor is most which were composed of 11.96%,10.51%,10.95%,13.28% and 10.77% of the total essential oil,and methyl β,β-dimethylbenzenepropanoic acid ester is second,which were composed of 1.51%,1.86%,2.52%,4.89% and 2.51% of the total essential oil,respectively.

5种栽培类型杭菊花挥发油中共有成分为1，3，3-三甲基环己-1-烯-4-甲醛、冰片、α-姜黄烯、α-甜没药萜醇、顺式石竹烯、桧脑、安息香酸苄酯、β，β-二甲基苯丙酸甲酯、2，4-癸二烯醛和二十一烷；其中桧脑含量最高，分别占挥发油总量的11.96%，10.51%，10.95%，13.28%和10.77%，为5种栽培类型杭菊花挥发油中最具特征的成分；其次是β，β-二甲基苯丙酸甲酯，分别占挥发油总量的1.51%，1.86%，2.52%，4.89%和2.51%。

Eight hydrazone Schiff bases have been synthesized by the reaction of salicylaldehyde, o–vanillin, 2-hydroxy-1-naphthaldehyde with nicotinic or isonicotinoyl hydrazide in anhydrous ethanol respectively; Three thiosemicarbazone Schiff bases have been synthesized by the reaction of salicylaldehyde, o–vanillin, o–hydroxyacetophenon with thiosemicarbazide in hydrous-ethanol respectively.

主要包括以下五部分的工作： 1、以水杨醛、邻香草醛、邻羟基萘甲醛、邻羟基苯乙酮分别与烟酰肼和异烟酰肼按1：1的比例在无水乙醇中反应，制备了八种酰腙类Schiff碱；以水杨醛、邻香草醛、邻羟基苯乙酮与氨基硫脲在水-乙醇混合溶剂中反应，合成了三种Schiff碱配体，并对Schiff碱配体的结构进行了表征。

Major procurement of goods: a three-chlorosilanes, dichloromethane, AE activity ester, 3-iodine Silane, special acid, pentyl chloride, triethylamine, thiadiazole, tetrazolylazo acid, 2 - Acetamide, tetrahydrofuran, the four-guanidine, isopropanol, five phosphorus trichloride, sodium vary bitter, acid, sodium phenylacetate, 6-2 silicon n-amine, Ethylacetoacetate , Methyl isobutyl ketone, potassium dihydrogen phosphate, aluminium oxide, DL methionine, N, N-dimethylaniline, NN-diethyl aniline, 4 sodium EDTA, Anhydrous sodium sulfate, ammonium sulfate, potassium sulfate, sodium acetate, sodium carbonate, DMC, formic acid, sodium chloride medicinal, oxalate, protopine, acetone, alcohol, acetic acid, vinegar Ethyl, butyl acetate, methanol, ethanol (anhydrous, industrial, medicinal), formaldehyde, Ye Jian (30%), hydrochloride (industrial-grade, refined grade, reagent level), sulfate (98%), Ammonia, calcium carbonate, chlorine dioxide, 6 - APA ,7-ACA ,7-ADCA ,7-ANCA, sulbactam, ceftazidime activity ester, Deng salt (hydroxymethyl-K, acid precursors Potassium, sodium dihydrogen methyl), resin, the enzyme, water treatment agent, Xiao Mo agent, demulsifier, flocculants, activated carbon, all kinds of medicinal materials, All kinds of additives

三甲基一氯硅烷、二氯甲烷、AE活性酯、三甲基碘硅烷、特戊酸、特戊酰氯、三乙胺、噻二唑、四氮唑乙酸、二甲基乙酰胺、四氢呋喃、四甲基胍、异丙醇、五氯化磷、异辛酸钠、苯乙酸、苯乙酸钠、六甲基二硅胺烷、乙酰乙酸乙酯、甲基异丁酮、磷酸二氢钾、三氧化二铝、DL蛋氨酸、N，N-二甲基苯胺、NN-二乙基苯胺、乙二胺四乙酸四钠、无水硫酸钠、硫酸铵、硫酸钾、醋酸钠、碳酸钠、碳酸二甲酯、甲酸、药用氯化钠、草酸、片碱、丙酮、正丁醇、冰醋酸、醋酸乙酯、醋酸丁酯、甲醇、乙醇、甲醛、液碱（30％）、盐酸（工业级、精制级、试剂级）、硫酸（98％）、氨水、碳酸钙、二氧化氯、6－APA、7－ACA、7－ADCA 、7－ANCA、舒巴坦、头孢他啶活性酯、邓盐(羟甲基钾、前体酸钾、二氢甲基钠)、树脂、生物酶、水处理剂、消沫剂、破乳剂、絮凝剂、活性碳、各种药用辅料、各种添加剂

Mechanism of the synthesization of aminobenzene sulfonate high performancing water-reducing was proved by virtue of mass experiment and infrared spectral analysis.

在合理酸碱催化作用下，形成初级生成物，然后和对氨基苯磺酸钠苯环的邻位缩合反应，同时氨基上只有一个氢和甲醛反应生成仲胺，最后形成高聚物。

This paperindicated that it was good for condensation reaction when benzene-ring bearingelectron-attaching groups. It also showed that and the 6-hydroxyl group could bereacted with acyl halide, haloid ether and halo alkene, but not with halo alkane. It wasnot only the first time to find that the reaction product of D-mannitol and aromaticaldehyde is tri-condensation derivatives, but also the first time to obtain thep-phthaldehyde-sorbitol derivatives containing eight hydroxyl groups.

研究发现：苯环上有吸电子基团时对缩合反应有利；多元醇缩醛衍生物6-羟基除与酰氯反应外，也能和卤代酸酯、溴代烯反应，但不与卤代烷反应；首次发现D-甘露醇与醛反应主要得到三缩合物；首次合成了含有8个羟基的对苯二甲醛和山梨醇的缩合物。

The famciclovir was synthesized from purine by a series of steps by Acylation, Decarboxylation, Reduction ,and so on; Derivatives of these intermediates is described from the 6-chloro- 9H- purin-2-amine as raw materials in different conditions when the iodine and bromide were synthesized with the addition of two intermediate 6-bromo-9H-purin-2-amine and 6-iodo-9H-purin-2-amine; There is elaborated from the main part of a acetophenone, urineaminohydrochloride, phenylhydrazine, ethyl acetoacetate as raw material through a series of reactions to synthetic 3-phenyl-4-formylphenyl pyrazole and 5-chloro-3-methyl-1-phenyl-1H-pyrazole-4-aldehyde two pyrazole aldehyde, and then with 2-amino-6-chlorine-9-(2-methicillin-oxo-co-methyl-4-yl) purine reaction of the two new pyrazole purine Schiff bases.

本论文主是采用以鸟嘌呤为原料，经过一系列的酰基化，脱羧，还原等反应作用下最终得到了产物2-氨基-9-(4-乙酰氧基-3-乙酰氧基甲基丁基)嘌呤；其中的中间体衍生物主要是阐述从以2-氨基-6-氯鸟嘌呤为原料通过在不同的条件下进行溴代与碘代分别合成了另外两种中间体2-氨基-6-溴鸟嘌呤及2-氨基-6-碘鸟嘌呤；还有一部分主要是阐述从以苯乙酮，盐酸氨基脲，苯肼，乙酰乙酸乙酯为原料通过一系列的反应先合成3-苯基-4-醛基吡唑及5-氯-3-甲基-1-苯基-1H-吡唑-4-甲醛这两个吡唑醛，然后再与2-氨基-6-氯-9-(2-甲氧羰基丁酸甲酯-4-基)嘌呤反应得到了两个新型的吡唑嘌呤席夫碱

Four chalcones were synthesized by aldol condensation reaction of acetophenone or para-substituted acetophenones with 2-phenyl-1,2,3-triazol-4-carboxaldehyde, which reacted with three hydrazines in glacial acetic acid under refluxing to give a series of pyrazoline derivatives.

以2-苯基－1，2，3-三唑基－4-甲醛为原料，与苯乙酮［或取代苯乙酮(1a~1d)］发生羟醛缩合，生成相应的查尔酮(2a~2d)，再与不同的肼反应，合成了12种新的5位含2-苯基－1，2，3-三唑基的吡唑啉衍生物3a~3d，4a~4d，5a~5d。

Hydroquinone-formaldehyde organic aerogels with high HC ratio (10~40, molar ratio of hydroquinone to catalyst) have been prepared using sol-gel process. And carbon aerogels have been prepared by pyrolyzing the aerogels.

溶胶－凝胶法制备了高HC比（10~40，对苯二酚与催化剂(Na2CO3)的物质的量之比）的对苯二酚－甲醛有机气凝胶，并经高温碳化处理得到其碳气凝胶。

For example imitation board and its products with the European edition of formaldehyde "shaving board," the standard indicators consistent; Solvents, benzene-based paint wooden limited value and the "Community eco-labelling products -- Seqi and varnishes ecological commands" the same; Carpet, carpet pad and carpet products used Jiaonianji divided into A, B levels, a level of environmental protection - which the limited value with the United States under the carpet Association standards volatile organic compounds, formaldehyde, and other indicators of the same; the conditions of application of radioactive materials into civil construction and industrial materials of construction, civil construction is divided into one category and class civil construction, and then, in accordance with A, B, C classification.

比如人造板及其制品中的甲醛限量与欧洲&刨花板&等有关标准的指标相一致；溶剂型木器涂料中苯的限量值与&欧共体生态标志产品―――色漆和清漆生态指令&相同；地毯、地毯衬垫及地毯用胶黏剂产品分为A、B两级，其中A级环保型的限量值与美国地毯协会标准规定的挥发性有机化合物、甲醛等指标相同；建筑材料放射性把材料适用条件分为民用建筑和工业建筑，民用建筑又分为一类和二类民用建筑，然后按照A、B、C分类。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。