No abstract

The irradiation of methyl pyruvate (III) and several methyl-substituted olefins (I) in acetonitrile gives allylic ethers (IV) as well as oxetanes (V) and alcohols (VI), Quenching studies suggest that IV and V are formed from the triplet state of methyl pyruvate, while VI is produced from the excited singlet state.

Die Bestrahlung des Dimethylbutens (I) in Gegenwart des Esters (II) in Acetonitril (Filter: in n‐Hexan gelöstes Naphthalin) unter Stickstoff liefert den Äther (III) neben den Alkoholen (IV) und (V).