7 research outputs found
Antarctic Study on Tropospheric Aerosol and Snow Chemistry (ASTASC) in JARE Phase X
The Tenth Symposium on Polar Science/Special session: [S] Future plan of Antarctic research: Towards phase X of the Japanese Antarctic Research Project (2022-2028) and beyond, Tue. 3 Dec. / Entrance Hall (1st floor) at National Institute of Polar Research (NIPR
ChemInform Abstract: UNTERSUCHUNGEN VON ORGANISCHEN FLUORVERBINDUNGEN 11.MITT. RK. VON ARYL-FLUORPHOSPHORANEN MIT ALKOHOLEN
Asymmetric Sulfoxidation of Thioethers with Hydrogen Peroxide in Water Mediated by Platinum Chiral Catalyst
Easy stereoselective oxidation of prochiral aryl alkyl sulfides 2 to the corresponding sulfoxides can be achieved in water-surfactant medium with inexpensive hydrogen peroxide mediated by the chiral platinum diphosphine complex {[(R)-BINAP]Pt(μ-OH)}2(BF4)2 (1). Remarkable key features of general interest are (i) easy isolation of the products from catalyst by simple diethyl ether/water-surfactant two phase separation, (ii) catalyst loading as low as 1% mol, (iii) good yields, sulfoxide 3 to sulfone 4 ratio up to 200 : 1 and enantioselectivities up to 88%, (iv) mild experimental conditions