Suppr超能文献

手性 C1 对称 NHC-Cu 配合物催化(频哪醇硼酸酯)烯丙基硼与取代芳基、杂芳基、烷基或烯基取代亚胺的反应对映选择性合成高烯丙基胺。

Enantioselective synthesis of homoallylic amines through reactions of (pinacolato)allylborons with aryl-, heteroaryl-, alkyl-, or alkene-substituted aldimines catalyzed by chiral C1-symmetric NHC-Cu complexes.

机构信息

Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States.

出版信息

J Am Chem Soc. 2011 Mar 16;133(10):3332-5. doi: 10.1021/ja200311n. Epub 2011 Feb 22.

Abstract

A catalytic method for enantioselective synthesis of homoallylamides through Cu-catalyzed reactions of stable and easily accessible (pinacolato)allylborons with aryl-, heteroaryl-, alkyl-, or alkenyl-substituted N-phosphinoylimines is disclosed. Transformations are promoted by 1-5 mol % of readily accessible NHC-Cu complexes, derived from C(1)-symmetric imidazolinium salts, which can be prepared in multigram quantities in four steps from commercially available materials. Allyl additions deliver the desired products in up to quantitative yield and 98.5:1.5 enantiomeric ratio and are amenable to gram-scale operations. A mechanistic model accounting for the observed selectivity levels and trends is proposed.

摘要

一种通过 Cu 催化稳定且易于获得的(频哪醇基)烯丙基硼与取代的芳基、杂芳基、烷基或烯基取代的 N-膦酰亚胺的反应对映选择性合成高烯丙基酰胺的催化方法。转化由易于获得的 NHC-Cu 配合物促进,该配合物由 C(1)-对称咪唑啉盐衍生而来,可从商业上可获得的材料通过四步反应以多克量制备。烯丙基加成以高达定量产率和 98.5:1.5 的对映体比例提供所需产物,并且适用于克级操作。提出了一个能够解释观察到的选择性水平和趋势的机理模型。

相似文献

引用本文的文献

1
IPr**-Highly Hindered, Ring Extended N-Heterocyclic Carbenes.IPr**-高度受阻、环扩展的氮杂环卡宾。
Organometallics. 2025 Aug 7;44(16):1848-53. doi: 10.1021/acs.organomet.5c00232.
3
5
Copper-Catalyzed Borylative Couplings with C-N Electrophiles.铜催化的与 C-N 亲电试剂的硼化偶联反应。
Angew Chem Int Ed Engl. 2020 Nov 9;59(46):20278-20289. doi: 10.1002/anie.202007251. Epub 2020 Jul 28.

本文引用的文献

8
Enantioselective Ag-Catalyzed Allylation of Aldimines.银催化醛亚胺的对映选择性烯丙基化反应
European J Org Chem. 2009 Aug 26;2009(30):5129-5131. doi: 10.1002/ejoc.200900669.

文献检索

告别复杂PubMed语法,用中文像聊天一样搜索,搜遍4000万医学文献。AI智能推荐,让科研检索更轻松。

立即免费搜索

文件翻译

保留排版,准确专业,支持PDF/Word/PPT等文件格式,支持 12+语言互译。

免费翻译文档

深度研究

AI帮你快速写综述,25分钟生成高质量综述,智能提取关键信息,辅助科研写作。

立即免费体验