苯甲基

The ultraviolet-visible absorption spectra, optical constants (complex refractive index N=n+ik) of the thin films and thermal characterizations of three kinds of novel nickel-azo dyes based on 4-methylthiazole, benzothiazole and 6-methylbenzothiazole were investigated.

分别对三种以 4 甲基噻唑、苯并噻唑和 6 甲基苯并噻唑作为重氮组份，以 3 二乙氨基苯酚作为偶合组份的偶氮染料的镍螯合物的光谱、热学性质和薄膜的光学常数(复折射率N =n+ik)及光存储性能进行了研究。

The ultraviolet-visible absorption spectra, optical constants (complex refractive index N=n+ik) of the thin films and thermal characterizations of three kinds of novel nickel-azo dyes based on 4-methylthiazole, benzothiazole and 6-methylbenzothiazole were investigated.

分别对三种以4-甲基噻唑、苯并噻唑和6-甲基苯并噻唑作为重氮组份，以3-二乙氨基苯酚作为偶合组份的偶氮染料的镍螯合物的光谱、热学性质和薄膜的光学常数及光存储性能进行了研究。

Quick vulcanization adjuvant, and said adjuvant includes dithioalchol benzothiazole, dibenzothiazole disulfide, tetra methylthiuram disulfide, zinc methyl phenyl dithio carbamate and ethyleen thiourea.

助剂是：二硫醇基苯并噻唑、二硫化二苯并噻唑、二硫化四甲基秋兰姆、甲基苯基二硫代氨基甲酸锌、乙烯硫脲。

Rhodococcus erythropolis TJQ can use both organic and inorganic sulfur as vegetal sulfide. The strain growing with sodium sulfate can effectively desulfurize benzothiophene DBT and its derivatives 4,6-dimethyldibenzothiophene (4, 6-DMDBT).

实验结果表明，该菌既可以利用有机硫源又可以利用廉价的无机硫源作为生长硫源，以硫酸钠作为硫源培养的菌株可专一性脱除苯并噻吩和DBT及其甲基衍生物4，6-二甲基二苯并噻吩(4，6-DMDBT)中的硫。

It isconfirmed by ~1H NMR,~(13)C NMR and X-ray crystallographic analysis that complexes 60-63are monopyridine complexes and show distorted square pyramid geometries; complexes 64and 65 are bispyridine complexes and show pseudo-octahedral geometries, where twopyridine ligands are in cis arrangement and trans to the NHC and the benzylidene ligandrespectively, the bond length between ruthenium and pyridine ligand trans to the benzylideneligand is 16 pm longer than the bond length between ruthenium and pyridine ligand trans tothe NHC ligand.

1H NMR、~(13)C NMR及X射线单晶衍射分析证明，配合物60-63是单吡啶衍生物配位的钌卡宾配合物，具有变形的四方锥构型；配合物64、65为双吡啶衍生物配位的钌卡宾配合物，具有变形的八面体构型，其中两个顺式配位的吡啶衍生物分别处于氮杂环卡宾和苯亚甲基的反位，处于苯亚甲基反位的吡啶衍生物对应的钌-氮键长要比处于氮杂环卡宾反位的长出16 pm。

Study on an efficient process for the preparation of trifloxystrobin starting from 2-methylacetophenone bypartial oxidation,esterification,reaction with methoxyamine,bromization and condensation with 3'- acetophenone oxime.

以邻甲基苯乙酮为原料，经过高锰酸钾的碱性氧化，甲醇酯化，再与甲氧基胺盐酸盐肟化后，用N-溴丁二酰亚胺溴化，最后和间三氟甲基苯乙酮肟缩合得到目标产物肟菌酯。

According to the 13CNMR chemical shifts of substituted benzene, conjugative effect parameter and inductive effect parameter are established.

以取代苯苯环碳原子化学位移为依据，用曾经设定并初步证实的甲基诱导效应和共轭效应参数，讨论了甲基取代基的诱导效应、共轭效应及定位效应。

The major products were methane, ethylene, propylene, butylene, butadiene, cyclopentadiene, benzene, toluene, styrene, vinyl-substituted cyclopentene derivatives and C5/C6 isomers (pentadiene, methyl-substituted cyclopentene derivatives, cyclohexene, hexadiene and methyl-substituted cyclopentadiene derivatives), and the main primary products were determined to be C1～C4 compounds, cyclopentadiene, benzene, toluene and vinyl-substituted cyclopentene derivatives.

热裂解主要产物为甲烷、乙烯、丙烯、丁烯、丁二烯、环戊二烯、苯、甲苯、苯乙烯、环戊烯的乙烯基取代物及C5， C6异构体(戊二烯、环戊烯的甲基取代物、环己烯、己二烯和环戊二烯甲基取代物)，其中， C1～C4、环戊二烯、苯、甲苯、乙烯基取代环戊烯为初始产物。

The major products were methane, ethylene, propylene, butylene, butadiene, cyclopentadiene, benzene, toluene, styrene, vinyl-substituted cyclopentene derivatives and C5/C6 isomers pentadiene, met...

热裂解主要产物为甲烷、乙烯、丙烯、丁烯、丁二烯、环戊二烯、苯、甲苯、苯乙烯、环戊烯的乙烯基取代物及C5，C6异构体(戊二烯、环戊烯的甲基取代物、环己烯、己二烯和环戊二烯甲基取代物)，其中，C1～C4、环戊二烯、苯、甲苯、乙烯基取代环戊烯为初始产物。

The method comprises following steps: taking diphenol and 3- trifluoromethyl- 4- chloronitrobenzene as raw material, salt precipitating for diphenol and potash, refluxing with water- containing toluene, reacting with 3- trifluoromethyl- 4- chloronitrobenzene and getting dinitro monomer; taking dinitro monomer, ferro powder and HCl as raw material, ethanol and water as disslovant for refluxing and ethanol recrystallization, getting fluorine- containing aromatic diamido monomer.

合成方法是以二酚与3-三氟甲基-4-氯硝基苯作原料，先将二酚与碳酸钾成盐，甲苯带水回流反应，然后与3-三氟甲基-4-氯硝基苯反应制得二硝基单体；再以二硝基单体，铁粉，HCl为原料，乙醇和水做溶剂，回流反应、乙醇重结晶，得到含氟芳香二胺基单体。

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。