Cc. Lin et Hj. Wu, THE FIRST EXCLUSIVE REGIOSELECTIVE FRAGMENTATION OF PRIMARY OZONIDES CONTROLLED BY REMOTE CARBONYL GROUPS, Tetrahedron letters, 36(51), 1995, pp. 9353-9356
Ozonolysis of compounds 1a-1d in CDCl3 at -78 degrees C regioselective
ly and stereoselectively gave the corresponding final ozonides 2a-2d a
s the sole product, which, after treatment with triethylamine, gave th
e novel convex tetraquinane era-cages 9a-9d in high yields respectivel
y.