We screened a set of Lewis base organocatalysts derived from chiral pipecolinic acid and tert-butanesulfinamide for the reduction of-N-Cbz-1- phenylpropenamine, including newly designed ones and some of those previously developed in our lab. However, only moderate stereoselectivities, albeit high yields were obtained.

在本課題組前期研究的基礎(chǔ)上，我們篩選并設(shè)計(jì)了一系列以手性哌啶酸和叔丁基亞磺酰胺為母體的有機(jī)小分子路易斯堿催化劑欧美激欧美啪啪片动态图，它們能催化三氯氫硅對(duì)-N-芐氧羰基-1-苯基丙烯胺的不對(duì)稱還原黑人大战白妞系列AV，獲得很高的收率和中等的對(duì)映選擇性一级片操逼视频，并且具有很好的底物普適性。

Starting from chiral proline, pipecolinic acid, piperazine-2-carboxylic acid and 1,2-diphenyl amino alcohol, a series of structurally simple and easily prepared amides were developed as highly effective Lewis basic organocatalysts for the asymmetric reduction of imines with trichlorosilane as the reducing agent, which promoted the reduction of N-aryl imines with high yields and excellent enantioselectivities with an unprecedented substrate spectrum.

本文分別由手性脯氨酸午夜欧美一区二区、哌啶酸99riAV.cn、哌嗪酸以及氨基醇出發(fā)，設(shè)計(jì)和合成了一系列結(jié)構(gòu)新穎麻豆国产原创视频在线、合成簡便变态自拍日韩欧美在线观看网站视频、性能優(yōu)良的酰胺類有機(jī)小分子路易斯堿催化劑，以廉價(jià)的三氯氫硅為氫源亚洲一级这片，用這些催化劑催化亞胺不對(duì)稱還原日韩性插，得到了非常優(yōu)良的收率、對(duì)映選擇性和前所未有的底物普適性欧美视频黄页。