烯基

Diamines are performed. An new and effective atom economy, domino reaction is developed, and 5, 6dihydro-4H-thieno [2, 3-b] thiopyran are synthesized by 4-(4-methyl-1, 3-dithiol-2-ylidene)-1, 7-diaryl-1, 6-diene-3, 5-dione

然后以4-[（4-甲基-1，3-二噻烷-2-亚甲基）-1，7-二芳基]-1，6-二烯-3，5-二酮类化合物为合成子探索稠杂环合成方法，并发现一个高效的，具有原子经济性的多米诺效应合成方法，并成功的利用其合成了一系列噻喃并噻吩衍生物。

The number of components in steam distillation extraction for chafu was about 13,mainly containing Thymyl methyl ether,Beta-selinene and so on,which occupied over 18% in all components.

水蒸气蒸馏法和超临界萃取测定柴胡挥发油成分比较发现，鉴别峰的数量相对较少，水蒸汽蒸馏法提取的柴胡挥发油中鉴定出13个主要成分，占挥发油组分的18％以上，主要成分为百里基甲基醚、β—蛇床烯等；超临界萃取的柴胡低极性成分中鉴定出9个主要成分，占低极性组分的20％以上。

Diallyl trisulphide garlic,onion,shallot

二烯丙基三醚大蒜，洋葱，青葱

Diallyl trisulphide garlic,onion,shallot

二烯丙基三硫醚大蒜，洋葱，青葱

Monodisperse carboxylated superparamagnetic polymer composite microspheres with high magnetite content were prepared by miniemulsion copolymerzation,in which acrylic acid and styrene were used as polymeric monomers,and Fe3O4 microparticles were costabilized by undecylenic acid /oleic acid.

在表面由十一烯酸和油酸共同修饰的Fe3O4磁流体存在下，以苯乙烯和丙烯酸为共聚单体，用细乳液聚合法，制备了单分散，高Fe3O4含量，且表面带有羧基的超顺磁性高分子复合微球。

The electronic structure and spectroscopic properties of some dicyano group verbenone deriatives were investigated by means of quantum chemistry semiempirical AM1 and INDO methods.

利用量子化学半经验AM1及INDO/ SCI方法研究了双氰基马鞭草烯酮衍生物的电子结构和光谱性质。

The process includes the steps of reacting a plurality of ethylenically unsaturated monomers and a reaction moderator with a macromer having induced unsaturation in the presence of a carrier polyol, a free radical polymerization initiator, and a first graft polyol.

本发明方法包括使多种烯键不饱和单体和反应调节剂与具有诱导不饱和度的大分子单体在载体多元醇、自由基聚合引发剂和初级接枝多元醇存在下反应的步骤。

The effect of emulsifying agent and neutralisation level on the stability of the polymeric system was investigated.

以丙烯酰氧基Span-80为乳化剂，采用反相乳液聚合法合成了高分子量聚丙烯酸钠。

Based on our early work, we will discuss the coupling the reaction of α-cyano ketenedithioacetals with Baylis-Hillman adducts.

基于以上的研究，本文着重讨论了α-氰基二硫缩烯酮与Baylis-Hillman加成产物的偶联反应。

Acrylamio-2-methyl propane sulfonic acid is applied in the production of water-based latex,which copolymerizes with acrylic acid,styrene or vinyl acetate to turn out latex resin.

2-丙烯酰胺基-2-甲基丙磺酸应用于水基性胶乳的生产过程中，与丙烯酸、苯乙烯或醋酸乙烯发生异分子聚合而生成胶乳树脂。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。