Synthesis of Chemically and Configurationally Stable Monofluoro Acylboronates: Effect of Ligand Structure on their Formation, Properties, and Reactivities
作者:Hidetoshi Noda、Jeffrey W. Bode
DOI:10.1021/jacs.5b00822
日期:2015.3.25
tetravalent, configurationally stable B-chiral acylboronates. Significantly, the ligands on the boronate allow for fine-tuning of the properties and reactivity of acylboronates. In amide-formingligation with hydroxylamines under aqueous conditions, a considerable difference in reactivity was observed as a function of ligand structure. The solid-state structures suggested that subtle steric and conformational
Direct functionalization of the ubiquitous CHbond is receiving much attention because complex structures can be formed from simple precursors. This paper reports a useful method for the direct hydroxylation of 2‐phenylpyridines using palladium(II) chloride and aqueous hydrogen peroxide. In this method, hydrogen peroxide, which has high atom efficiency, is employed as the oxidant and phenol derivatives
OLED DEVICE EMPLOYING ALKALI METAL CLUSTER COMPOUNDS
申请人:Begley William J.
公开号:US20090142618A1
公开(公告)日:2009-06-04
The invention provides an OLED device containing certain alkali metal cluster compounds with mixed ligands, such compounds, and methods of making them. In particular, the cluster compound is a neutrally charged mixed cluster compound comprising first and second subunits with the first subunit comprising an alkali metal salt of a nitrogen containing a heterocyclic ligand bearing a anionic hydroxy group and the second subunit consisting of an organic alkali metal salt different than the first subunit.
Synthesis of Axially Chiral QUINAP Derivatives by Ketone‐Catalyzed Enantioselective Oxidation
作者:Peng‐Ying Jiang、San Wu、Guan‐Jun Wang、Shao‐Hua Xiang、Bin Tan
DOI:10.1002/anie.202309272
日期:2023.10.2
reaction for the enantioselectiveoxidation of N atoms was developed and effectively applied to the atroposelective kinetic resolution of QUINAPOs and related compounds. Both highly enantioenriched QUINAPO N-oxide products could be readily converted into QUINAPs without loss of chiral integrity. QUINAPO N-oxide was also shown to act as a chiral Lewis base catalyst in a series of enantioselective transformations
开发了一种用于 N 原子对映选择性氧化的酮催化反应,并有效地应用于 QUINAPO 和相关化合物的对映选择性动力学拆分。两种高度对映体富集的 QUINAPO N-氧化物产物可以很容易地转化为 QUINAP,而不损失手性完整性。QUINAPO N-氧化物还被证明在一系列对映选择性转化中充当手性路易斯碱催化剂。