Y. Ishii et al., HYDROXYLATION OF POLYCYCLIC ALKANES WITH MOLECULAR-OXYGEN CATALYZED BY N-HYDROXYPHTHALIMIDE (NHPI) COMBINED WITH TRANSITION-METAL SALTS, Tetrahedron letters, 37(28), 1996, pp. 4993-4996
Adamantanes were successfully converted into the corresponding mono- a
nd dihydroxy adamantanes with molecular oxygen in the presence of N-hy
droxyphthalimide (NHPI) combined with cobalt salts under mild conditio
ns. For example, exposure of adamantane under oxygen atmosphere in the
presence of NHPI (10 mol%) and Co(acac)(2) (0.5 mol%) in acetic acid
at 75 degrees C for 6 h afforded adamantan-1-ol (43 %) and adamantane-
1,3-diol (40 %) along with adamantan-2-one (8 %) in 93 % conversion. S
imilarly, 1,3-dimethyladamantane produced 3,5-dimethyladamantan-1-ol (
47 %) and 5,7-dimethyladamantane-1,3-diol (37 %). Copyright (C) 1996 E
lsevier Science Ltd