Abstract
The silanol TsiSiMe 2OH (Tsi = (Me 3Si) 3C) has been made by hydrolysis of the iodide TsiSiMe 2I in H 2O/dioxane or H 2O/Me 2SO. It has been shown to react with some acid chlorides RCOCl (R=Me, Et, CICH 2 Ph, 4-O 2NC 6H 4, and 3,5- (O 2N) 2C 6H 3) and anhydrides (RCO) 2O (R = Me, CF 3, or Ph) to give the carboxylates TsiSiMe 2OCOR, and with SO 2Cl 2 to give TsiSiMe 2OSO 2Cl. The triol TsiSi(OH) 3 has been made by treatment of TsiSiH(OH)I with H 2O/Me 2SO at 150°C or with a mixture of aqueous AgClO 4 and an organic solvent. The triol has been shown to react with RCOCl (R = Me, Et, or Ph) or (RCO) 2O (R = Ph) to give the corresponding TsiSi(OCOR) 3, with (CF 3CO) 2O to give TsiSi(OH) 2(OCOCF 3), and with a mixture of Me 3SiCl and AgClO 4 in benzene or one of Me 3Sil and (Me 3Si)NH to give TsiSi(OSiMe 3) 3. The triol is unusually stable, but decomposes at its m.p. of 285–290°C.
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