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Die Mesyl‐ und Tosylaniline (I) reagieren thermisch in N,N‐Dibutylanilin in Gegenwart kleiner Mengen Triphenylphosphin nach Claisen zu den Verbindungen (II).

stereochemistry stereochemistry (general, optical resolution) O 0030 -039An Efficient Synthesis of (R)-(+)-Recifeiolide and Related Macrolides by Using Enantiomerically Pure (R)-(-)-5-Methyl-2,2,2-triphenyl-1,2λ 5 -oxaphospholane.-Starting from enantiomerically pure propene oxide the title compounds are prepared by a short route including the synthesis of esters (IV) and (V) from oxaphospholane (II) as key step. -(OKUMA, K.; HIRABAYASHI, S.; ONO, M.; SHIOJI, K.; MATSUYAMA, H.; BESTMANN, H.

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