间苯二酚[4]芳烃单元的自组装形成的六聚体胶囊促进了过氧化氢(H 2 O 2)向硫醚的高效无金属有机催化活化,从而在室温下数小时内以高收率产生了相应的亚砜。 。胶囊起着双重作用,即通过氢键活化氧化剂并促进腔体内的氧化反应。通过使用竞争性铵客体,模仿了竞争性抑制剂对酶的失活,观察到超分子有机催化剂的失活。
Supramolecular Activation of Hydrogen Peroxide in the Selective Sulfoxidation of Thioethers by a Self-Assembled Hexameric Capsule
作者:Giorgio La Sorella、Laura Sperni、Giorgio Strukul、Alessandro Scarso
DOI:10.1002/adsc.201600430
日期:2016.11.3
An efficient metal‐free organocatalytic activation of hydrogenperoxide (H2O2) towards thioethers leading to the corresponding sulfoxides in high yields at room temperature within hours was promoted by the hexamericcapsule formed by the self‐assembly of resorcin[4]arene units. The capsule plays a dual role of activating the oxidant through hydrogen bonding and favouring the oxidation reaction inside
间苯二酚[4]芳烃单元的自组装形成的六聚体胶囊促进了过氧化氢(H 2 O 2)向硫醚的高效无金属有机催化活化,从而在室温下数小时内以高收率产生了相应的亚砜。 。胶囊起着双重作用,即通过氢键活化氧化剂并促进腔体内的氧化反应。通过使用竞争性铵客体,模仿了竞争性抑制剂对酶的失活,观察到超分子有机催化剂的失活。
Reaction of Arynes with Sulfoxides
作者:Hong-Ying Li、Li-Juan Xing、Mei-Mei Lou、Han Wang、Rui-Hua Liu、Bin Wang
DOI:10.1021/ol5036326
日期:2015.3.6
A S–O bond insertion reaction of sulfoxides with arynes is reported. This reaction represents a rare instance of semipolar single bond insertion in aryne chemistry. The study of mechanism indicates that a sulfur ylide triggered by aryne is the key intermediate, which further transfers its methylene group to carbonylcompounds to give epoxides and thioethers through a sequential process.