查询词典 n-heneicosane
- 与 n-heneicosane 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The intermediate which obtained from oximation of 7a-e reacted withmethyl N-(2-bromomethylphenyl)-N-methoxycarbamate to synthesize oxime ether methyl carbamate 3a-e.
以邻位卤代苯甲醛和3-丁烯-2-醇为原料通过钯催化&一锅法&反应合成了2-乙酰基茚7a-e,7a-e 肟化之后和N-(2-溴甲基苯基)-N-甲氧基氨基甲酸甲酯反应合成了肟醚类氨基甲酸甲酯3a-e,进一步胺解之后得到了肟醚类氨基甲酰甲胺3f-j。
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Compared with theoretical values 49.0%C,7.8%H,17.1%N the elemental analysis results of YXA2.3 that was 45.1%C,4.7%H and 11.1%N showed that oxycellulose chloride were aminated only partially in about 45%yield because of their huge molecular volume.
对YXA2.3进行有机元素分析结果为:C 45.1,H 4.7,N 11.1(理论值为:C 49.0,H 7.8,N 17.1),其中11.1<17.1,4.7<7.8,这是由于大分子的特性,氧化纤维素的氯化物只部分发生的胺化。
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Acrylic resin containing N,N-dimethyl amino group and vinyl group applicable for UV-curable and cathodic electrophoretic paint was synthesized via radical polymerization of acrylic monomers followed by modification with methacrylic oxyethyl isocyanate.
通过自由基共聚合得到丙烯酸树脂,然后用甲基丙烯酸异氰酸乙酯对其改性,合成了既带有N,N-二甲胺基,又带有乙烯基的紫外光固化阴极电泳漆基体树脂。
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In order to check the corresponding compound at 31P NMR –45.4 ppm, stable pentacoordinate spirobicyclic 2-phenoxy-1,3-phenylene-dioxo-1,3,2-iminoacetoxyphosphoranes were synthesized through a new and efficient method whereby phosphorus pentachloride was displaced stepwise by catechol, N,O-bisamino acid and phenol, or catechol, phenol and N,O-bisamino acid, their 31P NMR chemical shifts are at about 31P NMR –45.0 ppm, the results showed that the compound 4 at 31P NMR –45.4 ppm was pentacoordinate phosphorane containing amino acid residue.
采用磷谱跟踪来研究上述成肽反应机理。例如在氮气保护下,0.1mmol O,O-亚苯基磷酰氯(1)和0.15mmol N,O-二苯丙氨酸(2)苯溶液加入0.6ml核磁管中,混合均匀,反应过程用磷谱检测。反应1分钟后,起始原料1(δp=19ppm)很快转变成N-磷酰苯丙氨酸的三甲基硅基酯(3)(δp=19.8ppm),在8分钟内,3完全转变成苯丙氨酸磷烷4(δp =-45.4ppm),同时出现环磷三酯(6)(δp=3.5ppm)。随着反应的进行,对应于化合物4的峰逐渐变小,而6逐渐变大。
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Cu2-Co2-KBr with high catalytic activity and selectivity shows synergistic effect between metal ions.Under the reaction conditions of mCu(Ac2:mCo(Ac2:m= 0.1:0.5:0.1, n:n=0.14, glacial acetic acid as solvent, overdosage sodium percarbonate, 65℃, the conversion can reach 45.9% and the selectivity for p-methoxy benzaldhyde is about 68.3%.
结果表明,Cu2-Co2-KBr具有较高的催化活性和选择性,体现出金属离子之间的协同作用,对甲基苯甲醚在mCu(Ac2:mCo(Ac2:m=0.1:0.5:0.1,n:n=0.14,冰醋酸作溶剂,稍过量的过碳酸钠,65℃的条件下,转化率可达45.9%,生成对甲氧基苯甲醛的选择性为68.3%。
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Pilot-plant test for synthesis of poly/attapulgite superabsorbent composite was carried out using acrylic acid and attapulgite as main raw materials,N,N′-methylene-bisacrylamide as crosslinker and composite composed of V-50 and ammonium persulphate as initiator by solution polymerization in a 100 L pilot-plant test equipment.
在100 L的中试设备上,用水溶液聚合法,以丙烯酸和凹凸棒黏土为主要原料,以N,N-亚甲基双丙烯酰胺为交联剂,V-50和过硫酸钾复配作为引发体系,进行了聚丙烯酸/凹凸棒复合保水剂的中试放大实验。
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Study on Extender N,N-Di(2-hydroxypropyl) phenylamine
扩链剂N,N-二(2-羟丙基)苯胺的研究
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Synthesis of Organic Pigmet Intermidiate N, N'- bisacetylaceto - 2 - methyl - 5 - chloro -1,4- Phenylenediamine
有机颜料中间体N,N′-双乙酰乙酰基2-甲基-5-氯代-1,4-苯二胺的合成
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Gabriel reaction was adopted to synthesis 2-(0ctahydro-1-azocinyl)ethylamine, N-(β-Heptamethyleniminoethy1)phthalimide was prepared by treating Heptamethylenimine with N -(β-bromoethy1) phthalimide. N -(β-bromoethy1) phthalimide was easily prepared from phthalic anhydride in two steps.
我们采用Gabriel伯胺合成法制备2-环庚亚胺基乙胺,从邻苯二甲酸酐经过两步反应很容易地得到N-邻苯二甲酰亚胺,然后与环庚亚胺发生亲核取代反应,产物再水解制得伯胺2-环庚亚胺基乙胺。
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N-propyl-4-(N-methylacryloxy-ethyl)amino-1,8-naphthalimide was synthesized and used for determination of picric acid.
合成了N-丙基-4-(N-甲基丙烯酰基氧乙基)氨基-1,8-萘酰亚胺,研制出了苦味酸荧光光纤传感器,可间接测定药片中磷酸氯喹和水样中苦味酸的含量。
- 相关中文对照歌词
- Play'n And Laugh'n
- These 'n' That 'n' Those
- Mah Nà Mah Nà
- S.A.N.T.A.N.A.
- S.A.N.T.A.N.A.
- Thug N U Thug N Me
- Rock 'n' Roll, Rock 'n' Roll
- Gone N' Done N' Did It
- Rock 'n' Roll 'n' You
- You N Me N Everyone We Know
- 推荐网络例句
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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.
每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。
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Maybe they'll disappear into a pothole.
也许他们将在壶穴里消失
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But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.
但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。