Helvetica Chimica Acta p. 1023 - 1028 (1992)
Update date:2022-09-26
Topics:
Fehr, Charles
Guntern, Olivier
(R)- and (S)-α-ionone ((R)- and (S)-1, resp.) were prepared from (R)- and (S)-α-damascone ((R)- and (S)-3, resp.) without racemization in 48percent yield employing a new enone transposition.The described transposition is complementary to existing methods whose application is often prohibited by the structural requirements of the substrate.The now easily accessible α-ionones of desired absolute configuration are useful as chiral building blocks for terpenoid syntheses.
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