查询词典 imines

During the research, one of the best stereoselective results was achieved in Streckerreactions on the aliphatic imines and the possible mechanism was proposed.

在研究过程中，我们发现在CsF促进下TMSCN能够对有α-氢的亚磺酰基亚胺进行高非对映选择性的加成反应并取得迄今为止脂肪族亚胺的Strecker反应的最好结果。

Catalytic enantioselective reduction of imines represents one of the most straightforward and efficient methods for the preparation of chiral amines, an important intermediate for the synthesis of natural products and chiral drugs.

中文摘要手性胺是合成天然产物和手性药物的重要中间体，亚胺的不对称催化还原是制备光学活性手性胺的最直接有效的方法之一。

Isoquinuclidines are structural elements of numerous alkaloids and can be prepared from the reaction of imines with cyclohexenone.

isoquinuclidines结构性因素众多生物碱可制备烯合成环己烯酮与亚胺反应。

The chiral ligands la-lf were used in the copper catalyzed asymmetric addition of diethylzinc to imines.

第二部分探索了一个新的含氮杂环丙烷的手性膦配体2的合成方法。

The reaction was assumed to be an electronphilic attack of nitrosonium on imines, resulting a four-member ring intermediate.

推定该反应经历了一个四员环过渡态，在过渡态中通过化学键的断裂与重组生成了相应的重氮盐和芳香醛。

In order to surmount the problem of slow reaction rate of the Baylis-Hillman reaction, we employed N-tosylated imines as the electronphile.

因为醛和环状烯酮的反应很难进行，我们便用活性更高的亲电试剂磺酰亚胺代替醛进行Baylis-Hillman反应，取得了很好的结果，反应速度得到了很大的提高。

We also achieved the Baylis-Hillman reaction of β-substituted activated olefin with N-tosylated imines.

对于β位有取代基的活化烯文献报道只有在高温高压下才能进行Baylis-Hillman反应。

This thesis focuses on the transformation of amines and imines under the condition of Barbier-type reactions,and also the synthesis of aziridines catalyzed by the PhI_2/I_2 system.

本论文主要对锌试剂Barbier型条件下胺、亚胺的转化和PhI_2/I_2体系下氮杂环丙烷的合成做了一些研究。

It seemed promising that Ni/SiO_2 can be an effective bifunctional catalyst for one pot synthesis imines from nitroaromatics.

我们(来源：A7bB76C论文网www.abclunwen.com)首次将Ni/SiO_2催化剂用于一锅法合成亚胺的研究。

Chiral amines widely existed and play an important role in the nature. Catalytic asymmetric reduction of imines represents one of the most important methods for preparing chiral amines.

摘 要：手性胺化合物广泛存在于自然界中并扮演着重要的角色，亚胺的不对称催化还原反应是制备手性胺化合物的最直接有效的方法。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。