The mechanisms of the ruthenium(Ⅱ)-catalyzed reaction of organic azide with terminal alkyne have been investigated using density functional theory.
采用密度泛函理论,对在Ru(Ⅱ)催化剂存在下,有机叠氮化合物和末端炔的反应机理作了深入理论研究。
The recent development about applications of ionic liquids(ILs) to transition metal -catalyzed cyclization of alkyne and enyne compounds was introduced.
概述了离子液体在过渡金属催化炔及烯炔类化合物环合反应中应用研究进展。
Part I:The very recent progress in palladium-catalyzed cyclization reactions is summarized, which includes the synthesis of a variety carbo- and heterocycles via palladiumπ-olefin andπ-alkyne chemistry, palladium oxidative addition/reductive elimination chemistry, andπ-allylpalladium chemistry.
钯催化合成碳环、杂环化合物的方法主要有三类：1)通过π-烯基或π-炔基钯中间体的环化反应，2)通过钯的氧化加成/还原消除的环化反应，3)通过π-烯丙基钯中间体的环化反应。
4A zeolite supported platinum catalyst for hydrosilylation of acetylene;
4A分子筛固载铂催化剂催化乙炔硅氢加成反应
The application of PLC in pneumatic convey facilities in acetylene production procedure;
PLC在乙炔系统气流输送装置中的应用
Methane pyrolysis to acetylene under arc plasma;
电弧等离子体裂解甲烷制乙炔
Seven 1-iodoalkynes in yields of 78%~91% were synthesized by reaction of terminal alkynes and cesium hydroxide in dry THF at room temperature for 3 h followed by treatment with iodine.
端炔与氢氧化铯在无水THF中于室温反应3h后与碘作用合成了7个炔基碘,收率78%~91%。
Synthesis and optical properties of polyacetylene bearing oxadiazole pendant group;
含噁二唑侧链的新型三阶非线性聚炔材料的制备及性能
Aryl substituted polyacetylenes and their derivatives exhibit a lot of novel optical, electric, magnetic properties.
芳基取代聚炔及其衍生物呈现出光 电 磁等许多新颖的性能。
Prasad's nonlinear optical theory some kind ofnew conjugated polyacetylenes' oPtical material were designed and synthesized.
Prasad非线性光学理论，设计了将具有大的共轭程度的偶氮苯非线性基团直接接枝于共轭的聚炔类高分子，制备新颖的光学聚炔类材料。
desogestrel ethinylestradiol
脱氧炔诺酮乙炔雌二醇
autogenous cutting
(乙炔)气割，氧炔熔化
SYNTHSIS OF LONG CHAIN TERMINAL TRIPLE BOND COMPOUNDS--8-NONYNOIC ACID AND HEXADECYNE-(1)
长链端炔化合物的合成(8—壬炔酸 1—十六炔烃)
generator, acetylene gas (water process)
乙炔气发生器（水生产）
Dissolved acetylene cylinders
GB11638-1989溶解乙炔气瓶
dichloroethynylmethyl ester phosphoric acid
二氯乙炔基甲基磷酸
Valves for dissolved acetylene cylinders
GB10879-1989溶解乙炔气瓶阀
carbide to water acetylene generator
电石入水式乙炔发生器
All but two of the city's17 concrete grain elevators lie empty, flanked by overgrown railway tracks.
?苫炷?列拗?幕疃?炔钟
of or related to acetylene.
乙炔的或与之相关的。
centalum (2-methyl-1-phenyl-3-butyne-1,2-diol)
生塔伦(甲苯丁炔二醇)
oxygen-acetylene flame spraying coating
氧－乙炔火焰喷涂涂层
Doppelduro method
乙炔火焰表面淬火法
water to carbide acetylene generator
电石加水式乙炔发生器
acetylene torch
乙炔燃烧器乙快焊炬
How to solve problems of acetylene gas leaking out of batterfly valves in the acetylene production system
如何解决乙炔发生系统蝶阀泄漏乙炔气的问题
Determination of content of levonorgestrel and quinestrol tablets by HPLC
HPLC外标法测定左炔诺孕酮炔雌醚片含量
The remaining 20%of the acetylene production is principally used for oxyacetylene cutting, heat treating, and welding.
乙炔生产的剩余20%主要用于氧乙炔切割、热处理和焊接。