Electronic Structure and Bonding in Iron(II) and Iron(I) Complexes Bearing Bisphosphine Ligands of Relevance to Iron-Catalyzed C–C Cross-Coupling
作者:Jared L. Kneebone、Valerie E. Fleischauer、Stephanie L. Daifuku、Ari A. Shaps、Joseph M. Bailey、Theresa E. Iannuzzi、Michael L. Neidig
DOI:10.1021/acs.inorgchem.5b02263
日期:2016.1.4
Xantphos) and known iron(I) variants to systematically discern the relative effects of bisphosphine backbone character and steric substitution on the overall electronic structure and bonding within their iron complexes across oxidation states implicated to be relevant in catalysis. Magnetic circular dichroism (MCD) and density functional theory (DFT) studies demonstrate that common o-phenylene and
Iron-catalysed 1,2-acyl migration of tertiary α-azido ketones and 2-azido-1,3-dicarbonyl compounds
作者:Tonghao Yang、Yajun Lin、Chaoqun Yang、Wei Yu
DOI:10.1039/c9gc02085c
日期:——
Iron-catalysed 1,2-acyl migration of tertiary α-azido ketones and 2-azido-1,3-dicarbonyl compounds provides a simple and atom-economical approach toward enamides and isoquinolones. This paper reports two catalyst systems for these transformations which employ iron(II) complexes [Fe(dpbz)]Br2 (dpbz = 1,2-bis(diphenylphosphino)benzene) and FeBr2/Et3N, respectively. [Fe(dpbz)]Br2 was found to be highly
铁催化的α-叠氮基酮和2-叠氮基-1,3-二羰基化合物的1,2-酰基迁移为酰胺和异喹啉酮提供了一种简单且原子经济的方法。本文报道两种催化剂体系用于这些转化其采用铁(II)配合物的[Fe(dpbz)]溴2(dpbz = 1,2-双(二苯基膦基)苯)和FeBr 2 / ET 3 N,分别。发现[Fe(dpbz)] Br 2在将2-叠氮基-2,3-二氢-1 H-茚满-1-酮转化为异喹诺酮方面非常有效。另一方面,由于Et 3的有益作用,FeBr 2 / Et 3 N的试剂组合具有更宽的催化范围N.后一种催化剂体系可使2-叠氮基-2-甲基-1,3-二羰基化合物在温和条件下以良好的收率转化为相应的酰胺。
Highly nucleophilic dipropanolamine chelated boron reagents for aryl-transmetallation to iron complexes
作者:Jay J. Dunsford、Ewan R. Clark、Michael J. Ingleson
DOI:10.1039/c5dt03835a
日期:——
New arylborates chelated by dipropanolamine are readily synthesised from boronic acids and demonstrated to be highly nucleophilic reagents.