Silica phosphoric acid: An efficient and recyclable catalyst for the solvent-free synthesis of acylals and their deprotection in MeOH
F Zhang, H Liu, QJ Zhang, YF Zhao…
Index: Zhang, Fuyi; Liu, Hong; Zhang, Qing-Ju; Zhao, Yu-Fen; Yang, Feng-Ling Synthetic Communications, 2010 , vol. 40, # 21 p. 3240 - 3250
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Citation Number: 8
Abstract
Silica phosphoric acid was used as an efficient, mild, and recyclable solid catalyst for the synthesis of acylals from various structurally diverse aldehydes and acetic anhydride under solvent-free conditions. The acylation of aldehydes was highly chemoselective, and no ketone was acylated, which provided a method for the synthesis of acylals from aldehydes in the presence of ketones. Silica phosphoric acid–catalyzed deprotection of acylals to the ...
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