A stereocontrolled approach to electrophilic epoxides
作者:Otto Meth-Cohn、Clive Moore、Heinrich C. Taljaard
DOI:10.1039/p19880002663
日期:——
Lithium t-butyl hydroperoxide (easily generated by addition of an alkyl-lithium to anhydrous t-butyl hydroperoxide in THF solution) is a powerful reagent for the epoxidation of electrophilic alkenes at –20 to 0 °C under full stereocontrol.
Substituted 6-hydroxymethyl-carbapenem antibiotics of the formula ##STR1## in which R.sup.1 is --OR.sup.4, ##STR2## A is a direct bond, or an alkylene and/or cycloalkylene radical, R.sup.2 is a group of the formula ##STR3## an aryl or heterocyclic radical, ##STR4## R.sup.3 is a COOH radical, or salt or ester thereof.