Pierre Vogel
The lithium enolate of(+/-)-6-endo-chloro-5-exo-(phenylseleno)-7-oxabicyclo[2.2.1]heptan-2-o ne (16) added to furan-2-carboxaldehyde giving a single aldol 19 (Schemes 1 and 2) that was converted with high stereoselectivity into (+/-)-(1RS, 3SR,4SR,5RS,6SR) ...
1998