multi-hollow spheres of epoxy resin were prepared by a physical method socalled phaseinversion emulsification technique. The formation mechanism of the titled spheres was studied by incomplete phaseinversion. The requisite for the formation of multi-hollow spheres was that irreversible coalescence among the water droplets under shear action before the phaseinversion point existed. This process could be
A NEW METHOD FOR THE DIRECT INTRODUCTION OF ALKOXYL GROUP TO SILYL ENOL ETHER WITH ALKYL HYPOCHLORITE CATALYZED BY PALLADIUM(O)
作者:Takashi Nakatsuka、Teruaki Mukaiyama
DOI:10.1246/cl.1982.369
日期:1982.3.5
α-Alkoxyketones and α-ketoacetals are prepared in good yields from silylenolethers and alkyl hypochlorites catalyzed by tetrakis (triphenylphosphine)palladium(O).
Asymmetric synthesis and anti-protozoal activity of the 8,4′-oxyneolignans virolin, surinamensin and analogues
作者:Claire E. Rye、David Barker
DOI:10.1016/j.ejmech.2012.12.013
日期:2013.2
The asymmetric synthesis of 8,4′-oxyneolignans (−)-virolin, (−)-surinamensin and a number of analogues has been achieved. A divergent synthesis was used, with all compounds being elaborated from a single chiral aldehyde derived from ethyl lactate. In the 15 compounds that were tested, the level of substitution on the A-ring was found to directly influence the activity against Leishmania donovani whilst
Alkoxyl radicals from alcohols. Spectroscopic detection of intermediate alkyl and acyl hypoiodites in the Suárez and Beebe reactions
作者:John L. Courtneidge、Janusz Lusztyk、Daniel Pagé
DOI:10.1016/s0040-4039(00)79950-3
日期:1994.2
Acetyl hypoiodite and a number of alkyl hypoiodites have been characterized as intermediates in the conversion of alcohols into alkoxylradicals under Suárez (photostimulated iodosobenzenediactetate/iodine reagent) and Beebe (photolysed acetyl hypoiodite/alcohol) conditions.