Synthese von enantiomerenreinen ‘Grasshopper’‐Ketonen und verwandten Verbindungen

Synthesis of Optically Pure Grasshopper Ketone and of Its Diastereoisomers and Related Compounds Starting from our previously described synthon 1 , the synthesis of four enantiomerically pure grasshopper ketons (diastereoisomeric 4‐(2′,4′‐dihydroxy‐2′,6′,6′‐trimethylcyclohexylidene)but‐3‐en‐2‐ons) and of their oxo derivatives was performed. Spectral and chiroptical data are presented.