NaBrO3/bmim[HSO4]: a versatile system for the selective oxidation of 1,2-diols, α-hydroxyketones, and alcohols
作者:Jitender M. Khurana、Anshika Lumb、Ankita Chaudhary
DOI:10.1007/s00706-016-1749-z
日期:2017.2
found to be an excellent oxidizing agent in aqueousmedium. NaBrO3:bmim[HSO4] oxidized 1,2-diols, α-hydroxyketones, and alcohols to the corresponding carbonylcompounds in excellent yields. This method offers advantages such as low cost reagents, aqueousreaction conditions, moderate temperatures and short reaction times and hence environmentally benign reaction. Moreover, the ionic liquid bmim[HSO4] could
OXIDATIVE CLEAVAGE OF 1, 2-DIOLS, α-KETOLS AND 1, 2-DIKETONES WITH AQUEOUS SODIUM HYPOCHLORITE
作者:J. M. Khurana、P. Sharma、A. Gogia、B. M. Kandpal
DOI:10.1080/00304940709356010
日期:2007.4
troublesome workup concerning cleavage of 1,2-diols with these and other reagents.'* The search for a practical and efficient reagent for C-C bond cleavage of a variety of 1,2-diols, a-ketols and 1,2-diketones has been the focus of our interest. We have described different applications of aqueous sodium hypochlorite?-l0 This paper reports a simple, convenient and inexpensiveprocedure for the oxidative
Ti(O-i-Pr)4/Me3SiCl/Mg reagent mediated McMurry coupling of aryl aldehydes to biaryl olefins at near room temperature. This low valent titanium (LVT) reagent also mediated the coupling of aldimines to 1,2-diamines (imino pinacol coupling).
Ti(O - Pr)4 / Me 3 SiCl / Mg试剂在接近室温的条件下介导的芳基醛与联芳基烯烃的McMurry偶联。这种低价钛(LVT)试剂还介导了亚胺与1,2-二胺的偶联(亚氨基频哪醇偶联)。
Reductive Dehalogenation of Arylhalides and Alkylhalides with Zinc in THF Saturated Aqueous Ammonium Chloride
作者:Rahim Hekmatshoar、Sodeh Sajadi、Majid M. Heravi
DOI:10.1002/jccs.200800089
日期:2008.6
A low-cost and highly effective zinc/THF-saturated aqueousammoniumchloride has been developed for dehalogenation of arylhalides and alkylhalides in aqueous systems.
The metal-free thermal organocatalytic pinacolcoupling of arylaldehydes has been developed. The intermolecular coupling of arylaldehydes catalyzed by t-butyl isonicotinate with bis(pinacolato)diboron as the co-reducing agent afforded 1,2-diphenylethane-1,2-diols. This reaction was also applicable to the intramolecular coupling of 1,1′-biphenyl-2,2′-dicarbaldehydes to afford 9,10-dihydrophenanthrene-9