Microwave-Accelerated N-Acylation of Sulfoximines with Aldehydes under Catalyst-Free Conditions
作者:Kamal K. Rajbongshi、Srinivas Ambala、Thavendran Govender、Hendrik G. Kruger、Per I. Arvidsson、Tricia Naicker
DOI:10.1055/s-0039-1691589
日期:2020.4
An efficient catalyst-free radical cross-coupling reaction between aromatic aldehydes and sulfoximines was developed. The reaction took place in the presence of N-bromosuccinimide as the radical initiator under microwave irradiation to afford the corresponding acylated sulfoximines in moderate to excellent yields (27 examples). This protocol proved to be rapid, easy to handle, and applicable to a broad
An iron(II)-catalyzed nitrene transfer reaction of sulfoxides with N-acyloxyamides has been developed, leading to the efficient construction of N-acyl sulfoximines with high functional-group compatibility. The current catalytic transformation was carried out under an air atmosphere at ambient temperature and could be scaled up to gram scale with a catalyst loading of 1 mol %. Application of the methodology
已经开发了亚砜与 N-酰氧基酰胺的铁 (II) 催化的氮烯转移反应,从而有效地构建了具有高官能团相容性的N-酰基亚砜亚胺。目前的催化转化是在环境温度下的空气气氛下进行的,并且可以在催化剂负载量为 1 mol% 的情况下放大至克级。该方法的应用通过使用N-酰基亚砜亚胺作为导向基团的简单 C-H 乙酰氧基化和烯化来证明。
The Copper-Catalyzed Oxidative<i>N</i>-Acylation of Sulfoximines
作者:Long Wang、Daniel L. Priebbenow、Liang-Hua Zou、Carsten Bolm
DOI:10.1002/adsc.201300273
日期:2013.5.17
AbstractAn oxidative cross‐coupling reaction between aldehydes and sulfoximines involving dual CH/NH functionalization has been developed. This reaction process is facilitated by a simple copper catalyst (1 mol% loading) and tert‐butyl hydroperoxide (TBHP) as the oxidant and proceeds under mild reaction conditions to afford a series of valuable N‐acylated sulfoximine derivatives in excellent yields.
HUANG SHUI-LUNG; SWERN D., J. ORG. CHEM., 1979, 44, NO 14, 2510-2513