二烯烃

We have studied the transition metal complexes catalyzed sequential cross coupling reactions of these new difunctional group reagents with electrophiles and nucleophiles, respectively; developed some convenient and practical new methods for the stereoselective synthesis of disubstituted alkenes, trisubstituted alkenes, conjugated dienes containing heteroatom, conjugated enyne containing heteroatom etc., enriching methodologies for organic synthesis.

继而研究了这些新型双官能试剂在过渡金属配合物催化下分别与亲电试剂、亲核试剂的顺序交叉偶联反应，为双取代烯烃、三取代烯烃、杂原子取代的共轭二烯烃、杂原子取代的共轭烯炔烃等的立体选择合成提供了方便实用的新方法，丰富了烯烃立体选择合成的方法学。

The invention provides a method for homopolymerizing conjugated dialkene or co-polymerizing conjugated dialkene and monovinyl aromatic hydrocarbon. The method comprises the following steps: the conjugated dialkene is homopolymerized or the conjugated dialkene and the monvinyl aromatic hydrocarbon are co-polymerized randomly. The method is characterized in that at least one alkali metal alkoxide compound expressed by the formula is used as a structure regulator; in the formula, R is linear chain or branched chain alkylidene radical having 1 to 10 carbon atoms; M is alkali metal selected from Li, Na, K, Rb and Cs.

本发明提供了一种使共轭二烯烃均聚或者使共轭二烯烃与单乙烯基芳烃共聚的方法，包括在阴离子聚合条件下使共轭二烯烃进行均聚或者使共轭二烯烃与单乙烯基芳烃进行无规共聚，其特征在于采用至少一种式所示的碱金属醇盐化合物作为结构调节剂，其中R为具有1-10碳原子的直链或支链亚烷基；以及M为选自Li、Na、K、Rb和Cs的碱金属。

These compounds were identified as follows:chrysophanol (FP-1),physcion(FP-2),eriosematin(FP-3),scoparone(FP-4),lupeol(FP-5),betulinic acid(FP-6),3\',4\'-Dihydroxy-trans-cinamic acid octacosyl ester(FP-7),β-sitosterol (FP-8),flemiphilippinone A(FP-9),monopalmitin(FP-10),emodin(FP-11),islandicin (FP-12),salicylic acid(FP-13),p-methoxyphenylpropionic acid(FP-14),trideca-1, 3-diene(FP-15),lupinifolin(FP-16),flemichin D(FP-17),flemiphilippinin A(FP-18), auriculasin(FP-19),erythrinin B(FP-20),6-C-prenylluteolin(FP-21), 8-(1,1-dimethylallyl) genistein(FP-22),flemiphilippinin E(FP-23),flemiphilippinin F (FP-24),5,7,3\',4\'-tetrahydroxy-6,8-diprenylisoflavone(FP-25),flemiphilippinin D (FP-26),dorsmaninsⅠ(FP-27),osajin(FP-28),6,8-diprenyleriodictyol(FP-29), lupinalbin A(FP-30),genistein(FP-31),3\'-O-methylorobol(FP-32),orobol(FP-33), 5,7,2\',3\',4\'-pentahrdroxyflavone(FP-34),the mixture of biochanin A and prunetin (FP-35 and 36),genistin(FP-37),sophororicoside(FP-38),3\'-O-methylorobol-7-glucoside(FP-39),the mixture of sissotrin and prunetin 4\'-O-β-D-glucoside(FP-40 and 41),adenosine(FP-42) and luteoloside(FP-43,mixture).

这些化合物分别为大黄酚(FP-1)、大黄素甲醚(FP-2)、eriosematin(FP-3)、滨蒿内酯(FP-4)、羽扇豆醇(FP-5)、白桦酸(FP-6)、咖啡酸二十八烷酯(FP-7)、β-谷甾醇(FP-8)、蔓性千斤拔酮A(FP-9)、单棕榈酸甘油酯(FP-10)、大黄素(FP-11)、islandicin(FP-12)、水杨酸(FP-13)、对甲氧基苯丙酸(FP-14)、十三烷-1，4-二烯烃(FP-15)、lupinifolin(FP-16)、千斤拔素D(FP-17)、蔓性千斤拔素A(FP-18)、auriculasin(FP-19)、erythrinin B(FP-20)、6-C-异戊烯基木犀草素(FP-21)、8-(1，1-二甲烯丙基)-染料木黄酮(FP-22)、蔓性千斤拔素E(FP-23)、蔓性千斤拔素F(FP-24)、5，7，3′，4′-四羟基-6，8-双异戊烯基异黄酮(FP-25)、蔓性千斤拔素D(FP-26)、dorsmaninsⅠ(FP-27)、osajin(FP-28)、6，8-双异戊烯基圣草素(FP-29)、lupinalbin A(FP-30)、染料木黄酮(FP-31)、3\'-O-甲基香豌豆苷元(FP-32)、奥洛醇(FP-33)、5，7，2′，3′，4′-五羟基黄酮(FP-34)、鹰嘴豆素甲和樱黄素的混合物(FP-35和FP-36)、染料木苷(FP-37)、槐属苷(FP-38)、7-葡萄糖基-3\'-O-甲基香豌豆苷(FP-39)、印度黄檀苷和樱黄素4′-O-β-D-葡萄糖苷的混合物(FP-40和FP-41)、腺嘌呤核苷(FP-42)和木犀草苷(FP-43，混合物)。

And then is the 2 to 4 ring PAH, in which the content of naphthyl- and phenanthryl- substance is more than 70%.

轻质馏分脂肪烃主要为环烯烃和二烯烃等烯烃，烷烃中以环烷烃居多；中质以上馏分的脂肪烃主要由C_(13)～C_(32)的正构烷烃组成。

In addition, the invention further relates to a catalyzer combination used for polymerizing a conjugated dialkene monomer and the anions of an optional mono-vinyl aromatic hydrocarbon into a polydiene polymer having high and medium vinyl content. The catalyzer combination comprises an organolithium compound used as an anionic polymerization initiator, at least an alkali metal alkoxide compound expressed by the formula as a structure regulator.

此外，本发明还涉及一种用于将共轭二烯烃单体和任选的单乙烯基芳烃阴离子聚合成具有中高乙烯基含量的聚二烯聚合物的催化剂组合物，其包含作为阴离子聚合引发剂的有机锂化合物，和作为结构调节剂的至少一种式所示的碱金属醇盐化合物。

One technique commonly used to reduce the amount of acetylenes and diolefins in an unsaturated hydrocarbon stream primarily comprising monoolefins involves selectively hydrogenating the acetylenes and diolefins to monoolefins.

用于降低主要包含单烯烃的不饱和烃料流中的炔烃和二烯烃的量的一种通用技术涉及将炔烃和二烯烃选择性加氢成单烯烃。

The content of conjugated dienes in petroleum products is determined by ultraviolet spectrophotometry.

在化学反应－气相色谱法联合测定含烯汽油中共轭二烯烃质量分数的基础上，建立了用紫外分光光度法测定油品中的共轭二烯烃的含量。

The C2 to C5 and heavier acetylenes and dienes in a thermally cracked feed stream are hydrogenated without significantly hydrogenating the C2 and C3 olefins.

使经过热裂解的进料物流中的C2－C5及更重的炔烃和二烯烃加氢，而不使C2和C3烯烃发生显著的加氢。

In order to decrease copolymerization loss of isoprene during thermal dimerization of cyclopentadiene in C5-fraction,the effect of three inhibitors,diethylhydroxylamine,p-tert-butylcatechol and o-nitrophenol,on dienes' polymerization in the process was investigated by experiment with sealed glasstube.

为减少C5馏分环戊二烯热二聚过程中异戊二烯的聚合损失，采用封管实验方法考察了添加阻聚剂二乙基羟胺、对叔丁基邻苯二酚、邻硝基苯酚对热二聚过程中各二烯烃组分聚合程度的影响。

Herein the latest developments of olefin aqueous polymerization which are mainly promoted by late- transition metal catalysts are reviewed including ethylene,α-olefins, cyclo-olefins and dienes polymerization, along with ROMP of cyclo-olefins and CO/olefins copolymerization.

本文综述了后过渡金属催化剂水相催化烯烃配位聚合的一些新进展，内容包括烯、α-烯烃、环烯烃、二烯烃的聚合反应和环烯烃的开环聚合反应以及CO/烯烃的共聚反应等方面。

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。

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。