In this paper, it is reported that the histidine-silane derivative Boc-His(
Boc)-CONH-(CH2)(3)Si(OEt)(3) can be polymerized via the sol-gel method or c
an be grafted on a silica surface. The obtained organosilicas bear histidin
e molecules covalently bonded on the inorganic matrix. Their Cu(II) complex
es have been evaluated as oxidation catalysts for the conversion of 3,5-di-
tert-butylcatechol (DTBC) to 3,5-di-tertbutylquinone (DTBQ) in the presence
of dioxygen. (C) 2000 Elsevier Science Inc. Ail rights reserved.