Various C–C and C‐X bonds could be formed by doublefunctionalization of olefins featuring Cu‐mediated assistedtandemcatalysis. Furthermore, one‐pot indoline syntheses with o‐bromostyrenes as an application could be achieved.
Preparation and evaluation of nitrene precursors (PhI=NSO2Ar) for the copper-catalyzed aziridination of olefins
作者:Mikael J. Södergren、Diego A. Alonso、Ashutosh V. Bedekar、Pher G. Andersson
DOI:10.1016/s0040-4039(97)01589-x
日期:1997.9
of different [N-(arenesulfonyl)imino]phenyliodinones is described, along with an evaluation of their utility as nitrene precursors for the copper-catalyzed aziridination of different olefins. The best results were obtained with p-NO2-C6H4SO2N=IPh and p-MeO-C6H4SO2N=IPh, both of which were found superior to PhI=NTs, which previously has been the reagent of choice for this type of reaction. The corresponding
描述了不同的[ N-(芳烃磺酰基)亚氨基]苯基碘丁酮的制备,以及对它们作为用于铜催化的不同烯烃的氮烯前体的效用的评价。使用p -NO 2 -C 6 H 4 SO 2 N = IPh和p -MeO-C 6 H 4 SO 2 N = IPh获得了最佳结果,这两个结果均优于以前被认为是PhI = NTs的情况。这类反应的选择试剂。使用1.0当量的烯烃和1.5当量的腈前体,可以以良好至极好的收率(60-99%)获得相应的氮丙啶衍生物。
CYCLIC IMIDATE LIGANDS
申请人:Noël Timothy
公开号:US20120077989A1
公开(公告)日:2012-03-29
The present invention relates to a use of a cyclic imidate as a ligand for catalysis in which the ligand contains sub-structure (Y) as a minimal structural motive, wherein the carbon atoms and the nitrogen atom can be optionally substituted by a chemical substituent.
A Pd- and norbornene-catalyzed domino procedure has been developed to synthesize indoline compounds. This reaction provides efficient access to indolines by employing aryl iodides with aziridines as new electrophiles. The transformation is scalable and tolerates a range of functional groups.
Catalytic heterogeneous aziridination of alkenes using microporous materials
作者:Christopher Langham、Paola Piaggio、Paul McMorn、David J. Willock、Graham J. Hutchings、Christopher Langham、Donald Bethell、Darren F. Lee、Graham J. Hutchings、Philip C. Bulman Page、Chris Sly、Frederick E. Hancock、Frank King
DOI:10.1039/a801997e
日期:——
Copper-exchanged zeolite Y is a highly active catalyst for the aziridination of alkenes; modification using bis(oxazolines) leads to preparation of the first heterogeneous enantioselective aziridination catalyst.