Biomimetic regioselective and high-yielding Cu(<scp>i</scp>)-catalyzed dimerization of sinapate esters in green solvent Cyrene™: towards sustainable antioxidant and anti-UV ingredients
作者:Matthieu M. Mention、Amandine L. Flourat、Cédric Peyrot、Florent Allais
DOI:10.1039/d0gc00122h
日期:——
work aimed at designing an industrially relevant sustainable synthetic pathway allowing their selective β–β′ dimerization to enhance their properties with a view to use them in commercial applications such as functional additives for cosmetics, plastics and food/feed. A copper(I)-catalyzed procedure involving pyridine and O2 from air was developed and greened up using the REACH-compliant bio-based
Enantioselective Construction of Amino Carboxylic‐Phosphonic Acid Derivatives Enabled by Chiral Amino Thiourea‐Catalyzed Decarboxylative Mannich Reaction
作者:Xue‐Qi Wang、Fang‐Fang Feng、Jing Nie、Fa‐Guang Zhang、Jun‐An Ma
DOI:10.1002/adsc.202200306
日期:2022.6.7
An asymmetric decarboxylativeMannichreaction of phosphonate sultam-ketimines with malonic acid half esters is developed enabled by saccharide-derived bifunctional amino thiourea catalysis. This protocol provides access to a broad range of α-amino-β-carboxylic phosphonates featuring the N,P-containing tetrasubstituted stereocenters with 78–99% ee. Further synthetic derivatizations could allow the
通过糖衍生的双功能氨基硫脲催化,开发了膦酸磺胺酮亚胺与丙二酸半酯的不对称脱羧曼尼希反应。该协议提供了广泛的 α-氨基-β-羧酸膦酸盐,具有 78–99% ee 的含N、P的四取代立体中心。进一步的合成衍生化可以允许将酰胺、醇和氮杂环丁烷支架引入核心结构。
SUBSTITUTED PHENOXY- AND PHENYLTHIO- DERIVATIVES FOR TREATING PROLIFERATIVE DISORDERS
申请人:Temple University of the Commonwealth
System of Higher Education