合成地

A new synthesis method of Taxanes was reported involving radicals generated from hypophosphorous acid n initiated by 2,2′-azobisisobutyronitrile.

由偶氮二异丁腈引发次磷酸产生次磷酸根自由基，以链式自由基反应机制脱除紫杉烷类化合物结构中的含氧基团，简单、高效地合成了紫杉烷。

It was found that the more easily systhesized and stable N, N-acetal or N, Ohemiacetal can replace N-tosyl imino ester to react with phenols in the presence of TiCl〓, and α-arylglycine derivatives were also obtained in high yields and high regioselectivity.

进一步研究发现，更易合成的N，N-或N，O-缩醛可以作为亚胺酯的替代物和酚类化合物发生傅克反应。路易酸TiCl〓能有效地促进酚类化合物和亚胺酯的傅克反应较高产率、较高区域选择性的得到2-羟基α-芳香甘氨酸衍生物。

We successfully achieved the first synthesis of the core structure of Dragmacidin D---3,6-bis(3'-indolyl)-2(1H)pyrazinone.

首次成功地完成了Dragmacidin D分子骨架---3，6-双(3'-吲哚)-2(1H)吡嗪酮的构建，目前我们正在将这种方法用于Dragmacidin D的全合成工作。

Hydrothermal synthesis makes the high degree of crystallization of products ,easily control of crystal size; the generation of compounds in low-, middle and special price state, and uniform interminglement.

水热溶剂热等条件合成的产物结晶度高且易于控制晶体粒度；有利于低价态、中间价态与特殊价态化合物的生成，并能均匀地进行掺杂。

Its catalytic performance for Heck arylation of acylic acid with iodobenzene shows that the catalyst has catalytic activity and regioselectivity for the synthesis of trans-phenylacrylic acid.

结果表明该催化剂具有较高的催化活性和立体选择性，可高转化率、高产率地合成反式苯丙烯酸；通过简单的过滤、溶剂洗涤回收催化剂，并能多次重复使用。

Isobutyraldehyde 1,2-propanediol acetalwas synthesized from isobutyraldehyde and 1,2-propanediol in the presence of aminosulfonic acid as catalyst.

详实地阐述了新型固体超强酸SO2-4/TiO2-MoO3催化剂的制备方法及其应用实例———催化合成异丁醛1，2-丙二醇缩醛新工艺。

This project mainly exploratorily studied that polyurethane was produced via condensation reaction between polyhydroxylated compounds and methyl carbamate, which was firstly synthesized by dimethyl carbonate and amines. The process is a green route because it turns away the synthesis and the utilization of toxical isocyanic acid ester.

本项目主要探索性地研究了碳酸二甲酯和胺类化合物反应生成氨基甲酸甲酯，然后氨基甲酸甲酯再和多羟基化合物直接反应得到聚氨酯材料，从而避免了异氰酸酯的合成和使用。

DNA synthesis was determined by isopycnic separation of cellular and viral DNA in CsCl gradients centrifugation. RT-PCR were u...

结论紫金标能抑制HSV-1对宿主细胞的吸附选择性地抑制HSV-1 DNA及蛋白质合成，抑制HSV-1gl基因转录

As a kind of important intermediates, glycosyl isothiocyanates have been applied in the preparation of new compounds possessing considerable bioactivities.

作为一类重要的有机合成中间体，糖基异硫氰酸酯广泛地应用于具有生理活性化合物的制备。

In this thesis,three copolymerization systems have been investigated in detail.They are α-ethylacrylic acid/maleimide,α- acrylic acid/maleimide and monomethyl itaconate/maleimide,respectively.

本文对α-乙基丙烯酸/马来酰亚胺、α-正丙基丙烯酸/马来酰亚胺和衣康酸单甲酯/马来酰亚胺三种新的共聚体系进行了详细地研究，并对合成共聚物的生理活性进行了初步探讨，实现了α-正丙基丙烯酸乙酯/马来酰亚胺体系的可控共聚反应。

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。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失