(S) 1,1-di-p-tolyl 1,2-dihydroxypropane;(S)-(-)-1,1-bis-p-tolyl-1,2-propanediol;S-(-)-1,1-di(p-tolyl)propane-1,2-diol;(S)-1,1-bis(4-methyl-phenyl)-1,2-propanediol;(2S)-1,1-Bis(4-methylphenyl)propane-1,2-diol
Design and Evaluation of Inclusion Resolutions, Based on Readily Available Host Compounds
作者:Simona Müller、Marcel Cyrus Afraz、René de Gelder、Gerry J. A. Ariaans、Bernard Kaptein、Quirinus B. Broxterman、Alle Bruggink
DOI:10.1002/ejoc.200400613
日期:2005.3
of enantiomers through selective crystallisation of diastereomeric inclusioncompounds can extend the scope of traditional racemate resolution beyond salt forming compounds. To assess the practical value of this approach the literature was carefully screened and promising results were checked. Also an extensive range of new inclusion hosts suitable for resolution processes, derived from simple hydroxyand
Antiinflammatory carbinoloimidazoles are provided which have the formula: ##STR1## or a pharmaceutically acceptable salt thereof, wherein R.sup.1 and R.sup.2 independently are H, F, Cl, Br, CH.sub.3, CF.sub.3 or S(O).sub.n R.sup.3 where n is 0, 1 or 2 and R.sup.3 is alkyl of 1-4 carbon atoms; R.sup.4 is H or alkyl of 1-4 carbon atoms with the proviso that R.sup.4 is H when m is 2 or 3; and m is 1 to 3. The carbinoloimidazoles are preferably administered as topical antiinflammatory compositions.
Asymmetric pinacol-type rearrangement of α-hydroxy methanesulfonates promoted by triethylaluminum — preparation of optically pure α-aryl and α-vinyl ketones —
Asymmetric (stereospecific) pinacol-type rearrangement of aryl or vinyl group in α-hydroxy methanesulfonates is promoted by Et3Al in CH2Cl2 at −78°C to afford optically pure α-aryl or α-vinyl ketones.