苯环
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Part 2. Annulation reaction of 3, 4-dichlorocoumarin (1) and 3, 4-dichloromaleimide (8) by a new general annulation strategy developed in this group with 2-phenylbenzofuran (15), 3-phenylbenzofuran (16), 2, 5-diphenyloxazole (17), 2, 5-diphenylthiazole (18), 2-methyl-4-phenylthiazole (19) and 2, 3-dimethoxy-1, 3-butadiene (40) were investigated.
二。在本课题组前一阶段提出的从二氯代环烯酮与1,1-二芳基乙烯的光化反应以及光化反应中得到的环丁烷产物的连续电环化反应对3,4-二氯马来酰亚胺以及3,4-二氯香豆素进行增环反应的工作基础上,研究了3,4-二氯香豆素(1)和3,4-二氯马来酰亚胺(8)与5个α-苯基取代的环烯烃2-苯基苯并呋喃(15),3-苯基苯并呋喃(16),2,5-二苯基噁唑(17),2,5-二苯基噻唑(18),2-甲基-4-苯基噻唑(19),以及一个丁二烯——2,3-二甲氧基丁二烯(40)进行的芳香族增环反应。
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A novel monomer the 1-methyl-4,5-bis(4-chlorobenzoy) cyclometer containing cyclohexene were prepared,so a group of novel polys containing the cyclohexene and phthalazinone moieties was prepared by the nucleophilic displacement reaction of 1-methyl-4,5-bis(4-chlorobenzoyl) cyclohexene and 4,4′-dichlorodiphenyl sulfone and 4-(3,5-dimethyl-4-hydroxyphenyl)-2,3-phthalazin-1-one.
用新型聚合单体1-甲基-4,5-二(4-氯代苯甲酰基)环己烯与4-(4-羟基苯基)-2,3-二氮杂萘-1-酮、4,4′-二氯二苯砜单体经亲核共缩聚反应,成功地合成了含环己烯结构的杂环联苯型聚醚系列聚合物。
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A novel monomer the 1-methyl-4,5-bis (4-chlorobenzoy) cyclometer containing cyclohexene were prepared,so a group of novel polys containing the cyclohexene and phthalazinone moieties was prepared by the nucleophilic displacement reaction of 1-methy l-4,5-bis(4-chlorobenzoyl) cyclohexene and 4,4'-dichlorodiphenyl sulfone and 4-(3,5-dimethyl-4-hydroxyphenyl)-2,3-phthalazin-1-one.
用新型聚合单体 1-甲基-4,5-二(4-氯代苯甲酰基)环己烯与 4-(4-羟基苯基)-2 ,3-二氮杂萘-1-酮、4,4′-二氯二苯砜单体经亲核共缩聚反应,成功地合成了含环己烯结构的杂环联苯型聚醚系列聚合物。
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Water,cetearyl alcohol,butylene glycol,ceteth-20,glycolic acid,cyclomethicone,citric acid,sodium hydroxide,xanthan gum,lactic acid,phenoxyethanol,sodium citrate,magnesium aluminium silicate,citrus aurantium dulcisoil,disodium edta,pentadecalactone,methylparaben,iris germanica root extract,butylparaben,ethylparaben,propylparaben,silica,chlorhexidine digluconate.citrus aurantium amaraoil,limonene,linalool
水, 棕榈醇,丁二醇,鲸蜡醇聚醚 20,甘醇酸,环甲硅脂,柠檬酸,氢氧化钠,山羊胶,乳酸,苯氧乙醇,柠檬酸钠,硅酸镁铝,甜橙油,乙酸乙二胺二钠,环十五内酯,羟苯甲酯,鸢尾花根萃取,羟苯丁酯,羟苯乙酯,羟苯丙酯,二氧化硅,洗必泰葡萄糖酸盐,苦橙油,柠檬精油,芳樟醇
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Water,caprylic/capric triglyceride,mineral oil,butylene glycol,stearic acid,acetylated lanolin,glycerin,ethylhexyl methoxycinnamate,dimethicone,polyisoprene,triethanolamine,cyclopentasiloxane,butyl methoxydibenzoylmethane,titanium dioxide,persea gratissima oil unsaponifiables,sodium DNA,borago officinalis seed oil,oenothera biennis oil,simmondsia chinensisseed oil,hydrolyzed RNA,tocopheryl acetate,urea,hydrolyzed extensin,retinyl palmitate,sodium hyaluronate,helianthus annuusseed oil,tocopherol,ascorbyl palmitate,ascorbic acid,lanolin alcohol,c12-20 acid peg-8 ester,cyclotetrasiloxane,glyceryl stearate,dimethiconol,ceteareth-20,carbomer,magnesium aluminum silicate,propylene glycol,peg-8,silica,BHT,citric acid,phenoxyethanol,methylparaben,butylparaben,ethylparaben,isobutylparaben,propylparaben,chlorhexidine digluconate
水,辛酸/癸酸三酸甘油酯,矿物油,丁二醇,硬脂酸,乙醯化羊毛脂,甘油,4-甲氧基肉桂酸-2-乙基己基酯,地美司康,聚异戊烯,三乙醇胺,环戊硅氧烷,丁基甲氧基二苯甲醯基甲烷,二氧化钛,酪梨油,DNA 钠盐,琉璃苣種子植物油,月见草油,荷荷巴籽油,水解RNA,醋酸盐维他命E,尿素,水解伸展蛋白,维他命A酯,透明质酸钠,葵花籽油,维生素E,抗坏血酸棕榈酸酯,维生素C衍生物,羊毛脂醇,C12-20 酸 PEG-8酯,环四硅氧烷,甘油硬脂酸,聚二甲基硅氧烷醇,鲸蜡硬脂醇醚-20,卡波姆,硅酸镁铝,丙二醇,聚乙二醇-8,二氧化硅,二丁基羟基甲苯,柠檬酸,苯氧乙醇,羟苯甲酯,羟苯丁酯,羟苯乙酯,羟苯甲酸异丁酯,羟苯丙酯,洗必泰葡萄糖酸盐
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The major products were methane, ethylene, propylene, butylene, butadiene, cyclopentadiene, benzene, toluene, styrene, vinyl-substituted cyclopentene derivatives and C5/C6 isomers (pentadiene, methyl-substituted cyclopentene derivatives, cyclohexene, hexadiene and methyl-substituted cyclopentadiene derivatives), and the main primary products were determined to be C1~C4 compounds, cyclopentadiene, benzene, toluene and vinyl-substituted cyclopentene derivatives.
热裂解主要产物为甲烷、乙烯、丙烯、丁烯、丁二烯、环戊二烯、苯、甲苯、苯乙烯、环戊烯的乙烯基取代物及C5, C6异构体(戊二烯、环戊烯的甲基取代物、环己烯、己二烯和环戊二烯甲基取代物),其中, C1~C4、环戊二烯、苯、甲苯、乙烯基取代环戊烯为初始产物。
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The major products were methane, ethylene, propylene, butylene, butadiene, cyclopentadiene, benzene, toluene, styrene, vinyl-substituted cyclopentene derivatives and C5/C6 isomers pentadiene, met...
热裂解主要产物为甲烷、乙烯、丙烯、丁烯、丁二烯、环戊二烯、苯、甲苯、苯乙烯、环戊烯的乙烯基取代物及C5,C6异构体(戊二烯、环戊烯的甲基取代物、环己烯、己二烯和环戊二烯甲基取代物),其中,C1~C4、环戊二烯、苯、甲苯、乙烯基取代环戊烯为初始产物。
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Chapter 1: The reactions of methylenecyclopropanes with phenylsulfenyl chloride or phenylselenyl chloride give cyclobutene derivatives along with ring-opened products in good total yields at 0 °C in various solvents. The reactions of methylenecyclopropanes with diphenyl diselenide give the di-phenylselenyl substituted ring-opening products which can be transformed to 2,5-dihydrofuran derivatives under the oxidation with hydrogen peroxide at room temperature.
在第一章中,我们发现亚甲基环丙烷类化合物在0℃时即可很快与苯硫氯或苯硒氯发生反应生成取代环丁烯类化合物和正常的开环产物;而与二苯基二硒的反应则需加热到150℃以上才能进行反应,生成的二苯硒基开环产物在双氧水氧化下可以转化为取代二氢呋喃类化合物。
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Good thermal stability and self-extinguishing behavior was observed with the cured polybenzoxazine resins. Second, furan-containing benzoxazine monomers, P-FBz, BPA-FBz, and 4FP-FBz were prepared using furfurylamine as a raw material. Formation of furfurylamine Mannich bridge networks in the polymerizations of P-FBz and BPA-FBz increased the cross-linking densities and thermal stability of the resulting polybenzoxazines. P-FBz and BPA-FBz- based polymers also exhibited high glass transition temperatures above 300℃, high char yields, and low flammability with a limited oxygen index value of 31. The dielectric (Dk3.21–3.39) and mechanical properties (high storage modulus of 3.0–3.9 GPa and low coefficient of thermal expansion of 37.7– 45.4 ppm) of the P-FBz and BPA-FBz-based polymers were superior or comparable to other polybenzoxazines. 4FP-FBz used for polybenzo- xazine modification by means of formation of benzoxazine hybridation with P-FBz.
第二部份以2-呋喃甲胺为起始物,制备了P-FBz、4FP-FBz与BPA-FBz 三个含呋喃官能基之氧代氮代苯并环己烷的单体;BPA-FBz与P-FBz於开环聚合中形成之Mannich bridge网状结构有效地提升聚氧代氮代苯并环己烷聚合物之交联密度与热安定性;Poly与Poly具有大於300℃之玻璃转移温度、高的焦炭生成率与具有31之极限氧指数(Limited oxygen index, LOI)的难燃性特质,Poly与Poly之介电常数(Dk=3.21~3.39)与机械性质[3.0~3.9 GPa的储存模数与37.7~45.4ppm之低热膨胀系数( Low coefficient of thermal expansion, Low CTE)]均较其他聚氧代氮代苯并环己烷为优;4FP-FBz具有低之介电常数(Dk=2.7),以其作为降低介电常数之反应型改质剂,与P-FBz混成,证实可有效地降低Poly的介电常数。
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To explore new synthetic methods, we set out a careful investigation of the reaction of benzimidazolium salt with many nucleophilic agents, including the active aromatic compounds and heteratom nucleophilic agents, and found that the quaternary C=N is not so active; when benzimidazolium salt is reacted with big nitrogen nucleophilic agent? phthalimide, it does not give the expected addition product, instead, produces N-alkyl phthalimide through alkyl-transfermation from benzimidazolium salt to phthalimide.
为了开发新的合成方法,研究了苯并咪唑盐与各种亲核试剂(活泼芳环与杂原子亲核试剂)的反应,发现苯并咪唑盐不与活泼芳环及杂原子亲核试剂发生2位加成反应;在与体积较大的位阻型N亲核试剂邻苯二甲酚亚胺反应时,未得到亲核试剂与极化的C=N的加成产物,而是得到N烷基化的邻苯二甲酰亚胺,进一步研究表明,苯并咪唑盐将1(3)位N上的烷基转移给了邻苯二甲酰亚胺,并讨论了其反应机理和取代基,溶剂效应。
- 推荐网络例句
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We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.
索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称;三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起,称之为挽歌体诗人或者史诗诗人,他们被称为诗人,似乎只是因为遵守格律写作,而非他们作品的模仿本质。
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The relationship between communicative competence and grammar teaching should be that of the ends and the means.
交际能力和语法的关系应该是目标与途径的关系。
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This is not paper type of business,it's people business,with such huge money involved.
这不是纸上谈兵式的交易,这是人与人的业务,而且涉及金额巨大。