Tungstophosphoric acid (H 3 PW 12 O 40) as a heterogeneous inorganic catalyst. Activation of hexamethyldisilazane (HMDS) by tungstophosphoric acid for efficient …

H Firouzabadi, N Iranpoor, K Amani…

Index: Firouzabadi, Habib; Iranpoor, Nasser; Amani, Kamal; Nowrouzi, Farhad Journal of the Chemical Society. Perkin Transactions 1, 2002 , # 23 p. 2601 - 2604

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Citation Number: 112

Abstract

Primarily as a model reaction, silylation of benzyl alcohol with HMDS was performed in the presence of several heteropolyacids and their salts, and some other acids at 55–60 °C under solvent-free conditions (Table 1). In order to show the strong catalytic activity of heteropolyacids and their salts in comparison with other acids, we studied the catalytic activities of HY-zeolite, Amberlyst-15, triflic acid and sulfuric acid for this purpose. The results show that in the ...