Beschreibung:
<jats:title>Abstract</jats:title>
<jats:p>Oxidation with ozone of the acetate (1) adsorbed on silicagel, alumina, or barium sulphate proceeds in good yield and gives mainly the alcohol (2) and the ketone (3). The high regioselectivity of the reaction when conducted at a suitable substrate loading is attributed to the mutual steric effect of one molecule upon the other in the adsorbed monolayer.</jats:p>