Thermal Nickel-Catalyzed <i>N</i>-Arylation of NH-Sulfoximines with (Hetero)aryl Chlorides Enabled by PhPAd-DalPhos Ligation
作者:Samuel A. Fisher、Connor M. Simon、Peter L. Fox、Michael J. Cotnam、Patrick L. DeRoy、Mark Stradiotto
DOI:10.1021/acs.orglett.3c04152
日期:2024.2.23
cross-coupling of NH-sulfoximines with (hetero)arylchlorides, as well as bromide and sulfonate electrophiles, that makes use of the air-stable, commercial precatalyst (PhPAd-DalPhos)Ni(o-tol)Cl. Under optimized conditions a diverse electrophile scope is established, including the N-arylation of the pharmaceutical Clozapine. While 5 mol % Ni and 80 °C are commonly employed in this chemistry, successful examples
我们报告了一种使用空气稳定的商用预催化剂 (PhPAd-DalPhos)Ni( o -tol) 使NH -亚砜亚胺与(杂)芳基氯以及溴化物和磺酸盐亲电试剂交叉偶联的通用方法克莱。在优化条件下,建立了多种亲电试剂范围,包括药物氯氮平的N-芳基化。虽然该化学反应通常采用 5 mol% Ni 和 80 °C,但本文也介绍了使用 1 mol% Ni 和/或 25 °C 的成功示例。竞争实验证实了在这些条件下NH-亚磺酰亚胺作为亲核试剂优于伯磺酰胺。
Sulfoximines from a Medicinal Chemist's Perspective: Physicochemical and in vitro Parameters Relevant for Drug Discovery
Sulfoximines, sulfondiimides and sulfonimidamides are fascinating but not yet fully explored variants of the common sulfone or sulfonamide motif. In this study, we report the physicochemical and in vitro properties of sulfoximines and compare them with related analogs and isosteres. Furthermore, we present a matched molecular pair analysis of compounds from drug discovery projects within Boehringer Ingelheim. We demonstrate that the sulfoximine moiety is a chemically stable, comparatively polar and weakly basic functional group, often leading to favorable aqueous solubility, permeability and metabolic stability. Moreover, their additional vectors at nitrogen enable simple chemical modifications and thus facilitate exploration and fine-tuning of the molecular properties. We conclude that sulfoximines and their congeners do not exhibit any intrinsic flaw but significantly enrich the toolbox of medicinal chemists. (C) 2016 Elsevier Masson SAS. All rights reserved.
General synthetic strategies towards N-alkyl sulfoximine building blocks for medicinal chemistry and the use of dimethylsulfoximine as a versatile precursor
作者:Frederick W. Goldberg、Jason G. Kettle、Jian Xiong、Daoguang Lin
DOI:10.1016/j.tet.2014.06.120
日期:2014.9
The sulfoximine group has great potential as a substituent in drug discovery, as evidenced by two new clinical candidates, and can be viewed as an isosteric alternative to the commonly used sulfone. Our aim was to improve the accessibility of this group by synthesising a diverse range of S-alkyl and N-alkyl sulfoximinebuildingblocks with procedures that are applicable on a practical scale (>10 g)