苯并

So the difficult sequence of cracking to remove the sulfur for different sulfur compounds is that thiophene, benzothiophene＞alkyl side-chains of thiophenic compounds＞mercaptan, sulfur ether.

总之，不同含硫化合物裂化脱硫的难度顺序为：噻吩、苯并噻吩＞烷基噻吩＞硫醇、硫醚。

First, the geometry optimization for 1-phenyldibenzophosphole and triphenylphosphine were carried out using quantum chemical AM1 method.

用量子化学AM1方法优化了1-苯基二苯并膦和三苯基膦的几何构型，比较了两种化合物的电子结构和空间结构，发现PDBP作为羰基合成铑膦催化剂的配体要优于三苯基膦；系统研究了PDBP的合成方法，其最佳合成条件为：在无水无氧的条件下，采用二乙胺锂与溴化四苯基膦摩尔比为3，反应温度为22 ℃，反应5 h，反应后酸化， pH值为1～2，产物收率可达到85％～88％。

As CAAX-mimetics, 1, 3-dihydro-5-phenyl-2-H-1, 4-benzodiazepin-2-one was modified by linking carboxyl groups with various carbon through N-1 and C-3, 3-(imidazol-4-yl) propion amido group with different substituents was connected at C-7; In the synthesis of bisubstrate analogues, thiocarbamido compounds was alkylated by alkyl iodide and then hydrolyzed to give alkylthiol benzoate compounds.

1，4-苯并二氮杂草-2-酮类化合物的合成过程中分别对其1、3、4和7位进行了基团变化，在1和3位连接不同长度含羧基或酯基的侧链，在7位连接不同取代的咪唑丙酰氨基。在苯甲酸硫醇酯化合物合成过程中，建立了一种硫原子连有不同长度碳链的苯甲酸硫醇酯的合成方法。

Scientific research confirmed that the computer screen to produce a brominated dibenzofuran called carcinogens.

科学研究证实，电脑的荧屏能产生一种叫溴化二苯并呋喃的致癌物质。

Research confirms that the computer screen to produce a brominated dibenzofuran called carcinogens.

科学研究证实，电脑的荧屏能产生一种叫溴化二苯并呋喃的致癌物质。

Scientific research confirmed that the computer screen to produce a brominated dibenzofuran called carcinogens.

科学研讨证实，电脑的荧屏能发生一种叫溴化二苯并呋喃的致癌物资。

Aminobenzothiazoleswere diazotized and then coupled with active methylenecompounds to form a kinds of new hydrazones.

苯基硫脲在浓硫酸中，先在溴作用下氧化合环，再直接硝化，得到产率95％，纯度98％的2-氨基-6-硝基苯并噻唑。

The periodontal indices and the keratinized gingiva width records during different time points of the study.

牙周指数（有价证券投资，帕金森病，胃肠道和苯并）和角化牙龈宽度记录在不同时间点的研究。

The HDS activity of Co-MoP/ Al_2O_3 catalysts is more effective than commercial catalysts and sulfured ones.

以二苯并噻吩和喹啉混合物为反应物，Co-MoP／γ-Al_2O_3具有较好的HDS活性。

The estraction of trace copper by crown ether and KI system was studied.

本文用二苯并2 4 王冠8，KI体系配合萃取分离痕量铜，用原子吸收光谱法测定铜，萃取结果令人满意。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。