映

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。

In the fifth part, asymmetric synthesis of β,γ-trans-alkenyl α-amino esters was achieved by chiral phosphoric acid catalyzed transfer hydrogenation of β,γ-alkynyl α-imino esters. Utilizing Hantzsch ester as the hydrogen donor, both the alkyne and imine moieties of β,γ-alkynyl α-imino esters were reduced to yield β,γ-trans-alkenyl α-amino esters with up to 96% ee.

第五部分工作中，使用手性磷酸作为催化剂，Hantzsch酯作为氢源，β，γ-炔烃取代的α-酮酸酯亚胺中的炔键和亚胺官能团均被还原，以中等的收率和优秀的对映选择性（up to 96% ee）得到β，γ-反式烯烃取代的α-氨基酸衍生物。

I am always dreaming, intwining my webs of fairy tales freely, as the cobwebs on the dark and grey wall, they are slim and fragile but they can permeate the sunshine, still shining lively in the wind, shaking.

我尽管常常漫天胡想，却自由地编织自己童话的网，像遍布的蜘蛛网，虽然细弱，却能映透出阳光，在风雨中摇曳着生命的光芒。

This command is often used to confirm that there is ample space to store a new IOS image.

这指令常被用来确认是否有足够空间来储存新的 IOS 映像档。

This IOS image is several megabytes and may take a long time to download.

此 IOS 映像档有数百万位元组且可能需要花费很长的时间来下载。

This first step in this process is to identify why the IOS image did not load from flash.

这个程序的第一个步骤是要辨识为什麼 IOS 映像档未从快闪记忆体载入。

According to the results of the examination, the stronger the electron-withdrawing protective group of imines, the better the cis-selectivity of the reaction, 68% yield, trans:cis is 99:1 diastereoselectivity could be leaded by Ts-imines (4-methyl-N-methylene-benzenesulfonaides) with a substituent [2,4-(CH3O)2C6H3], Substrate scope investigation revealed that a wide variety of ketenes and imines could react smoothly to afford corresponding,β-lactams.

实验结果表明，亚胺的保护基团吸电子能力越强，越有利于顺式产物的生成。对甲苯磺酰基保护的取代基为2，4-二甲氧苯基的亚胺参与的该反应可得到68%的产率，反式：顺式=99：1的非对映选择性。底物拓展过程中发现Staudinger反应适用于多种不同的亚胺与烯酮。

Lake House French Restaurant not only has an excellent view of Carp Lake, but it also offers a wide variety of exquisite French cuisine dishes.

取得不易，又拥有极佳赏湖视野的的湖畔合法地点，除了刻意保留户外造景空间，有限的室内餐区，采用了极大视野的透明落地玻璃窗，让选择室内用餐的客人，一样享受到窗外的一景一物；落日余晖红霞照映，或是阳光照射水面波光粼粼，无不透射入窗。

Patterns in Nature: Reflections Bare trees cast lacy likenesses on Kunming Lake in Beijing, China.

位于中国的北京昆明湖上，深秋落叶的树林投下花边般的映像。

Length of the image. This field is in little-endian format, andthe value is in units of 512 bytes.

2-字节域，用来表示该映像的长度。little-endian格式，其值是以512字节为单位的。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。