Pierre Vogel
Bromination of the dibenzyl acetal of (-)-(1S,4S)-7-oxabicyclo[2.2.1]hept-5-en-2-one ((-)-5) led to (+)-(1S,5S,6S,7S)-6-endo-(benzyloxy)-5-exo-bromo-7-oxabicyclo[2.2.1]hept an-2-one (25). Baeyer-Villiger oxidation of 25 gave 2-O-benzyl-3-bromo-3,5-dideoxy- ...
1991