Preparation of Silica-bonded Propyl-diethylene-triamine-N- sulfamic Acid as a Recyclable Catalyst for Chemoselective Synthesis of 1,1-Diacetates  

作　　者：Nouri Sefat, Maryam Deris, Abdolah Niknam, Khodabakhsh 

机构地区：[1]Chemistry Department, Faculty of Sciences, Persian Gulf University, Bushehr, 75169, Iran

出　　处：《Chinese Journal of Chemistry》2011年第11期2361-2367,共7页中国化学（英文版）

摘　　要：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.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.

关 键 词：silica-bonded propyl-diethylene-triamine-N-sulfamic acid 1 1-diacetates aromatic aldehydes catalyst solvent-free 

分 类 号：TQ426.6[化学工程] TQ925[轻工技术与工程—发酵工程]