硫代
- 与 硫代 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Methods 4-Hydroxybenzonitrile (2) as the starting material was transformed to 4-hydroxy-thiobenzamide (3) via thioformylation. And ethyl 2-(4-hydroxyphenyl)-4-methylthiazole-5-carboxylate (4), which was synthesized via cyclization from 3, was treated with hexamethylenetetramine to generate the intermediate ethyl 2-(3-formyl-4-hydroxyphenyl)-4-methylthiazole-5-carboxylate (5). The target compound febuxostat (1) was obtained from 5 by etherification, cyanidation, hydrolysis.
以羟基苯腈为原料,经硫代甲酰化得到对羟基硫代苯甲酰胺(3),3经环合得到2-(4-羟基苯基)-4-甲基-噻唑-5-羧酸乙酯(4),4与乌洛托品反应,得到中间体2-(3-甲酰基-4-羟基苯基)-4-甲基-噻唑-5-羧酸乙酯(5),之后再经醚化、氰化、水解得到目标产物(1)。
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Chapter 4 describes the synthesis, structural characterization and properties of anovel organic-inorganic hybrid compound, F〓〓BEDT-TTF =bis(ethylenedithiotetrathiafulvalene, which has been synthesized through thereaction of the pre-intercalate Fe〓PS〓〓(phen = 1.10-phenanthroline) with〓 Compared with the pristine FePS〓, the lattice spacing isexpanded by about 4.0〓, indicating that the molecular ring plane of BEDT-TTF isarranged parallel to the layer of the host.
通过红外光谱推测客体BEDT-TTF在层间以中性状态存在。X-线光电子能谱揭示在夹层化合物Fe〓PS〓〓中磷原子和硫原子在硫代亚磷酸根负离子簇中各存在两种化合价态,其中一种价态与纯主体或预夹层化合物〓〓中的磷原子和硫原子价态一致,而另一种价态却比纯主体FePS〓或预夹层化合物Fe〓中的磷原子和硫原子价态高。
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Diallyl trisulfide was synthesized with a yield of 76.4% based on sodium thiosulfate, allyl bromide and sodium sulfide. And diallyl tetrasulfide was synthesized by the reaction of sulfur monochloride with ally1 mercaptan with a yield of 81.0%.
以硫代硫酸钠、烯丙基澳和硫化钠为原料,合成了二烯丙基三硫,产率为76.4%;以一氯化硫和烯丙硫醇为原料合成了二烯丙基四硫,产率为81.0%。
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In the seventh chapter, the reaction of sodium hydrogen selenide with thiocarbamates and dithiocarbamates in ethanol as a selenium-containing reagent with good nucleophilic and reductive property were studied.
第七章进行了硒试剂NaHSe与硫代氨基甲酸酯和二硫代氨基甲酸酯的反应研究,并提出了反应的可能机理。
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Company sulphur, sodium thiosulfate for the main field, sulphur, sales of 60000-80000 tons of sodium thiosulfate in sales of 8,000 tons, and annual sales of 67 million yuan, is the Northeast regional sales sulfur professional firms .
公司以硫磺、硫代硫酸钠为主营领域,硫磺年销售量为60000-80000吨,硫代硫酸钠年销售量8000吨,年销售额为人民币6700万元,是东北地区销售硫磺的专业公司。
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Chemical method that is used chlorine sodium thiosulfate, the proportion of water per 10 kg plus 1 gram of sodium thiosulfate, stirring dissolved, you can use.
化学法即用硫代硫酸钠除氯,其比例为每10公斤水加1克硫代硫酸钠,搅拌溶解后,即可使用。
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According to the reducibility of sodium thiosulfate ,the interference of sulfite is eliminated by formaldehyde and sodium thiosulfate is determined by indirect iodimetry with addition of excessive iodine.
根据硫代硫酸钠的还原性,以甲醛消除亚硫酸盐的干扰,加过量碘,间接法测定硫代硫酸钠。
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By neutralizating, evaporating and crystallizing by-product sodium thiosulfate could be prep.
氧化后液的主要成分为硫代硫酸钠,通过中和、浓缩和结晶,可以副产出硫代硫酸钠。
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In this paper, a series of 4,5-dithiacrown ether annulated 1,3-dithiole-2-thiones 8a~8d were prepared via condensing 4,5-bis-1,3-dithiole-2-thione (7) with 1,ω-dimercapto polyglycol derivatives in high dilution. The obvious template effect was found during the synthesis of 8c-8d.
在高度稀释条件下,经4,5-二溴甲基-1,3-二硫杂环戊烯-2-硫酮(7)和多缩乙二醇的1,ω-二巯基衍生物的缩合反应,方便地合成了4,5-位带二硫杂冠醚残基的2-硫代-1,3-二硫杂环戊烯的衍生物8a~8d,中间体硫杂冠醚8c~8d的合成中有明显的&模板效应&。
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In this paper, a series of 4,5-dithiacrown ether annulated 1,3-dithiole-2-thiones 8a~8d were prepared via condensing 4,5-bis-1,3-dithiole-2-thione (7) with 1,ω-dimercapto polyglycol derivatives in high dilution. The obvious template effect was found during the synthesis of 8c-8d.
在高度稀释条件下,经4,5-二溴甲基-1,3-二硫杂环戊烯-2-硫酮(7)和多缩乙二醇的1,ω-二巰基衍生物的缩合反应,方便地合成了4,5-位带二硫杂冠醚残基的2-硫代-1,3-二硫杂环戊烯的衍生物8a~8d,中间体硫杂冠醚8c~8d的合成中有明显的&模板效应&。
- 推荐网络例句
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It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.
从鲍尔点的形成原理出发,分析对称连杆曲线上鲍尔点的产生条件,提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。
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The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.
集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品,年生产总值3000万美元,产品价廉物美、选料上乘、质量保证,深受国内外客户的青睐
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The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.
血精的原因很,以良性病变为主。