Bromination-dehydrobromination route to some naturally occurring 1,6-dioxaspiro[4,4]-nonenes and 1,6-dioxaspiro[4,4]-nonadienes.
J. Chem. Soc. Perk Trans 1. 1995, 10, 1309.
From (R)-(+)-pulegone to (2S,4R,6R,8S)-2,4,8-trimethyl-1,7- dioxaspiro[5.5]undecane - a unique spiroacetal from the insect kingdom.
Tetrahedron- Asym. 1995, 6, 397.
