Triphenylsilanol

White crystal

Triphenylsilanol is used as a water surrogate for regioselective Pd catalyzed allylations. A thick on germanium substrates have been produced by the electron bombardment of an evaporated thin film of triphenylsilanol.

ChEBI: An organosilanol in which silicon is bonded to a single hydroxy function and to three phenyl groups.

It is purified by dissolving in pet ether, passing through an Al2O3 column, eluting thoroughly with CCl4 to remove impurities and then eluting the silanol with MeOH. Evaporation gives crystals with m 153-155o. It can be recrystallised from pet ether, CCl4 or from *benzene or Et2O/pet ether (1:1). It has also been recrystallised by partial freezing from the melt to constant melting point. [George & Gilman J Am Chem Soc 81 3288 1959, IR: Tatlock & Rochow J Org Chem 17 1555 1952 and Richards & Thompson J Chem Soc 124 1949, Beilstein 16 IV 1480.]