G. Pozzi et al., COBALT TETRAARYLPORPHYRIN-CATALYZED EPOXIDATION OF ALKENES BY DIOXYGEN AND 2-METHYLPROPANAL UNDER FLUOROUS BIPHASIC CONDITIONS, Chemical communications, (1), 1997, pp. 69-70
The aerobic epoxidation of alkenes with 2-methylpropanal can be carrie
d out under fluorous biphasic conditions, in the presence of the perfl
uorocarbon soluble cobalt complex of tetraarylporphyrin 3 as catalyst.