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Preparation of Silica‐bonded Propyl‐diethylene‐triamine‐ N ‐sulfamic Acid as a Recyclable Catalyst for Chemoselective Synthesis of 1,1‐Diacetates
Author(s) -
Nouri Sefat Maryam,
Deris Abdolah,
Niknam Khodabakhsh
Publication year - 2011
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201180403
Subject(s) - sulfamic acid , chemistry , catalysis , acetic anhydride , diethylene glycol , organic chemistry , diethylenetriamine , solid acid , acetic acid , solvent , ethylene glycol
Abstract A simple and efficient procedure for the preparation of silica‐bonded propyl‐diethylene‐triamine‐ N ‐sulfamic acid (SPDTSA) by reaction of 3‐diethylenetriamine‐propylsilica (DTPS) and chlorosulfonic acid in chloroform is described. Silica‐bonded propyl‐diethylene‐triamine‐ N ‐sulfamic acid is employed as a recyclable catalyst for the synthesis of 1,1‐diacetates from aromatic aldehydes and acetic anhydride under mild and solvent‐free conditions at room temperature. Catalyst could be recycled for several times without any additional treatment.