Brominative cyclisation of nerolidol and geranyl-linalool

(+)-Nerolidol was treated with 2,4,4,6-tetrabromocyclohexa-2,5-dienone to afford the brominative cyclisation products α- and β-snyderols and 3-bromocaparrapi oxide and its 8-epimer; (±)-geranyl-linalool gave the analogous tricyclic ethers.