Abstract

AbstractDie aus den Glykolsäurepropargylestern (I) mit (II) erzeugten Lithiumsalze (III) ergeben bei der Claisen‐ Umlagerung die Allen‐carbonsäuren (Va) und (Vb), wobei die Säuren (Va) mit hoher Diastereoselektivität bevorzugt entstehen.

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