A new method for the synthesis of bishydroperoxides based on a reaction of ketals with hydrogen peroxide catalyzed by boron trifluoride complexes
作者:Alexander O. Terent'ev、Alexander V. Kutkin、Maxim M. Platonov、Yuri N. Ogibin、Gennady I. Nikishin
DOI:10.1016/s0040-4039(03)01844-6
日期:2003.9
A reaction of cycloalkanone, alkanone and alkyl aryl ketone ketals with H2O2 catalyzed by borontrifluorideetherate and boron trifluoride–methanol complexes was studied. A new versatile method for the synthesis of bishydroperoxides and their derivatives, viz. 1,1′-dihydroperoxyperoxides and 1,2,4,5-tetraoxacyclohexanes, was developed based on this reaction.
研究了三氟化硼醚化物和三氟化硼-甲醇配合物催化的环烷酮,烷酮和烷基芳基酮缩酮与H 2 O 2的反应。一种新的通用的双氢过氧化物及其衍生物的合成方法,即。基于该反应,开发了1,1'-二氢过氧过氧化物和1,2,4,5-四氧杂环己烷。
Hexasubstituted Benzenes with Ultrastrong Dipole Moments
benzenes have been synthesized with the highest known dipolemoments, as determined by dielectric spectroscopy and DFT methods. Based on the preparation of 4,5‐diamino‐3,6‐dibromophthalonitrile, combined with a novel method to synthesize dihydrobenzimidazoles, these benzene derivatives have dipolemoments in excess of 10 debye. Such dipolemoments are desirable in ferroelectrics, nonlinear optics, and
Direct C-glycosylation of a conformationally constrained and stable C1-sp3 hybridized carbohydrate donor with a carefully designed sphingosine unit afforded the CH2-linked analogue of antitumor-active KRN7000 and its glucose congener.