二戊基

The poly with p-aminophenyl-ethynyl as a side-group was synthesized through Pd-catalyzed Sonogashira coupling reaction between 4-[(2,5-dibromophenyl)ethynyl] aniline and 1,4-diethynyl-2,5-bis benzene.

通过单体4-[(2，5-二溴苯)乙炔基]苯胺和1，4-二乙炔基-2，5-二戊氧基苯之间的Sonogashira偶合反应合成了带有p-氨基苯乙炔基共轭侧基的聚对苯撑乙炔。

They were eucalyptol, bicyclo［2.2.1］heptan-2-one,1,7,7-trimethyl-,(1R)-, borneol, 1-methyl-2-(1-methyl ethenyl)-(1R-cis)-cyclobutaneethanol, limonene, 1-hydroxymethyl-7,7-dimethy lbicyclo［2.2.1］heptan-2-one,-spathulenol, 3,7,11,15-Tetramethyl-2-hexadecen-1-ol, isocitronellol,-9-Octadecenoic acid, heneicosane, respectively.

阿给中共有11个阿给炭没有检测出的成分，包括桉油精、D-樟脑、冰片、(1R-cis)- 1-甲基-2-(1-甲基乙烯基)环丁基乙醇、二戊烯、1-羟甲基-7，7-二甲基-双环［2.2.1］庚-2-酮、-匙叶桉油烯醇、3，7，11，15-四甲基-2-十六碳烯-1-醇、异香茅醇、-9-十八碳烯酸和廿一烷。

Under high dilution,the cross-coupling reactions of 4,5-dicyano-1,3-dithiol-2-one(6) and dithia crown-ether annulated tetrathiafulvalenes(3a～3c) in toluene gave asymmetrical dicyano tetrathiafulvalene derivatives(7a～7c) in the presence of triethyl phosphite.The compounds 7a～7c were characterized by(~1HNMR,EA,MS and IR.

在甲苯溶液中，在亚磷酸三乙酯存在下，采取高度稀释的方法，使4，5-二氰基-1，3-二硫杂环戊二烯-2-酮分别和多缩硫杂冠醚进行交叉偶联反应，成功地得到了不对称的2，3-二氰基四硫富瓦烯衍生物。

A process for the carbonylation of allylic butenyl ether (for example, methyl crotyl ether, 3-methoxybutene-1 and mixtures thereof) or mixture of butadiene and alcohol and production of beta-gamma unsaturated carboxylic acid esters (for example, methyl-3-pentenoate) utilizing a rhodium-containing catalyst for example, dicarbonylacetylacetonate rhodium(I or the like promoted with an iodide-containing compound (for example, HI, AlI3, SnI4, TiI4, CrI3, and CoI2 or the like).

一种将烯丙型丁烯基醚(如甲基巴豆基醚、3－甲氧基丁烯－1及其混合物)或者丁二烯与醇的混合物羰基化的方法，以及由含碘化物化合物(如HI、AlI3、SnI4、TiI4、CrI3和CoI2或等效物)促进，用含铑催化剂如二羰基乙酰丙酮酸铑(I或其等效物制备β－γ不饱和羧酸酯(如甲基－3－戊烯酸酯)的方法。

For the test of such mechanism,we have measured the solubilities of n-valeric acid at 25℃in the aqueous solutions of following five cobalt ammines:(1) luteo,(2) purpuro,(3) xantho,(4) croceo and (5) flavo.

根据这样的机构，我们在25°下测了在下面五种钴络盐水溶液中正戊酸的溶度：(1)氯化六氨基钴；(2)氯化一氯五氨基钴；(3)氯化一硝基五氨基钴；(4)氯化反二硝基四氨基钴；(5)氯化顺二硝基四氨基钴。

The main research now is focused on the polymerization of difluoramino substituted oxetane monomers, the preparation of neopentyl difluoramino nitrato plasticizers, and the molecular design and synthesis of cyclic N2 nitramino geminal difluoramino oxidizers.

目前该领域的研究工作主要集中在二氟氨基取代环氧丁烷聚合物合成，新戊基二氟氨基硝酸酯增塑剂制备，以及环N2硝胺基偕二氟氨基氧化剂的分子设计与合成上。

A similar reaction of the sulfur analog gave only the product of tetramethylene bridged bisdititanium halides.

在企图合成硫桥环戊二烯基化合物时，得到的却是四亚甲基桥联双环戊二烯基金属衍生物。

Distearyl pentaerythritol diphosphite has been synthesized with pentaerythritol, triethyl phosphite and stearic alcohol.

以季戊四醇、亚磷酸三乙酯和十八醇为原料，在实验室合成了二硬脂基季戊四醇二亚磷酸酯。

Their structures were characterized as usnic acid,evinic acid,perlatolic acid,olivetoric acid,2-hydroxyl-4-methoxyl-6-pentyl benzoic acid and 2,4-dihydroxyl benzoic acid,respectively.

结果从太白花的石油醚部分得到6个化合物，分别鉴定为：松萝酸、去甲环萝酸、珠光酸、漂红梅衣酸、2-羟基-4-甲氧基-6-正戊基苯甲酸和2，4-二羟基-6-正戊基苯甲酸。

Dicyclopentyldimethoxysilane was synthesized by the addition of silicon hydride method and the reaction conditions were studied.

介绍了以二环戊基二氯硅烷为中间产物合成二环戊基二甲氧基硅烷的方法。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。