Copper-Mediated Cross-Coupling Reactions of N-Unsubstituted Sulfoximines and Aryl Halides
作者:Gae Young Cho、Pauline Rémy、Jenny Jansson、Christian Moessner、Carsten Bolm
DOI:10.1021/ol048806h
日期:2004.9.1
[reaction: see text] Copper-mediated cross-coupling reactions of sulfoximines with aryl iodides and aryl bromides provide N-arylatedsulfoximines in high yields. The method is complementary to the known palladium-catalyzed N-arylation and allows the preparation of N-arylatedsulfoximines, which have previously been inaccessible.
Efficient Copper-Catalyzed N-Arylation of Sulfoximines with Aryl Iodides and Aryl Bromides
作者:Jörg Sedelmeier、Carsten Bolm
DOI:10.1021/jo051066l
日期:2005.8.1
systems for copper-catalyed N-arylations of sulfoximines with arylbromides and aryliodides have been developed. Using 10 mol % of a copper(I) salt in combination with 20 mol % of a 1,2-diamine and Cs2CO3 provides N-arylated sulfoximines in high yields. Various functional groups and heteroatoms are tolarated. The method is complementary to the known protocols for N-arylations of sulfoximines, which require
已经开发了两种简单且廉价的系统,用于亚砜基与芳基溴化物和芳基碘化物的铜催化的N-芳基化。将10摩尔%的铜(I)盐与20摩尔%的1,2-二胺和Cs 2 CO 3结合使用,可以高收率得到N-芳基化亚砜基。各种官能团和杂原子是对等的。该方法是对亚砜亚胺N-芳基化的已知方案的补充,后者需要化学计量的铜盐或成本昂贵的钯/ BINAP催化剂。
Palladium-Catalyzed <i>N</i>-Arylation of Sulfoximines with Aryl Bromides and Aryl Iodides
作者:Carsten Bolm、Jens P. Hildebrand
DOI:10.1021/jo991342u
日期:2000.1.1
Various N-arylated sulfoximines have been synthesized in high yield by a direct approach which is based on a palladium-catalyzedcross-coupling strategy. Arylbromides of variable substitution pattern were found to be the most effective coupling partners, whereas aryliodides showed a nonpredictable behavior requiring lithium or silver salts as additives to ensure product formation in acceptable yields