In EtOH/benzene, 2-butyn-1, 4-diol and its derivatives can be halogenated by cupric halide stereospecifically to obtain (E)-2,3-dihalo-2-buten-1,4-diol derivatives.
采用乙醇 /苯为反应溶剂 ,以α -炔醇为反应原料 ,氯化铜为卤化剂 ,立体专一性合成 (E) - 2 ,3-二卤 - 2 -丁烯 - 1 ,4-二醇及其衍生物。
"Asymmetric syntheses are often called stereoselective; if one product forms exclusively, it is stereospecific"
不对称合成法也称立体选择性合成;如果反应只生成一种产物,则把这种反应称为立体专一性反应。
Some familiar stereospecific reactions appear in Table 12.1.
某些类似的立体专一反应示于表12．1中。
The Three-Dimension Drama Education Model of National Opera College
论国立剧专“三维一体”的戏剧教育模式
The Necessity and Possibility of Setting up Fitness and Health Major in Sport University and College;
体育院校设立健身健康专业的必要性与可行性
He eulogized constitutional government as immeasurably superior to despotism
他盛赞立宪政体比专制统治有无比的优越性。
On the Necessity of Establishing a Teaching System for Industrial Design Specialty;
论建立工业设计专业教学体系结构的必要性
Establishing the integration platform of professional softwares for exploration and development
勘探开发专业软件一体化应用平台的建立
The footing is to start from the fact of college--A little taste of elemental education in computer;
立足点:从师专的实际出发——师专计算机基础教育的一点体会
(iii) a section of independent trade experts, nominated by the independent entity referred to in subparagraph (a).
(ⅲ)由(a)项所指的独立实体提名的一组独立贸易专家。
This has sparked calls that there was a need for a federation for men.
因此，一些人呼吁成立专门的男性联合会。
The General Properties of Cubic Matrices Based on a New Mulitiplication;
立体阵基于一种新乘法下的一般性质
EXISTENCE AND UNIQUENESS OF EQUIVALENT CLASS OF THE CENTRAL CONFIGURATION FOR NESTED CUBES
立方体套中心构型的存在唯一性(英文)
The independent entity shall be responsible for establishing a panel.
独立实体应负责设立专家组。
Exploratory Research on Establishing the Instructional Quality Supervision and Evaluation System in Our Country s Higher Vocational Education;
对我国高职高专教育建立教学质量监督与评估体系的探索性研究
Exploration on Innovative Experimental Teaching System for the Biochemical Engineering
建立生物化工专业多层次创新性实验体系的探索
Setting Up Three Systems and One Mould-The Performance on Educational Reform by Electrical Technique Department;
建好三个体系 创立一个模式──—电气技术专业的教改实践
Institutional Isomorphism and European Integration:A Case Study on the Establishment of Ombudsman in EU
制度同构理论与欧洲一体化——以欧盟监察专员制度的建立为案例
Chapter five deals with some specializations of the simplex method and the development of optimality criteria in linear programming.
第五章处理一些专门的单纯形法和建立了线性规划的最优准则。