Silica-bonded S-sulfonic acid as a recyclable catalyst for chemoselective synthesis of 1,1-diacetates
作者:Khodabakhsh Niknam、Dariush Saberi、Maryam Nouri Sefat
DOI:10.1016/j.tetlet.2009.04.096
日期:2009.7
A simple and efficient procedure for the preparation of silica-bonded S-sulfonic acid (SBSSA) by reaction of 3-mercaptopropylsilica (MPS) and chlorosulfonic acid in chloroform is described. This solid 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.
描述了一种通过3-巯基丙基二氧化硅(MPS)和氯磺酸在氯仿中反应制备二氧化硅键合的S-磺酸(SBSSA)的简单有效的方法。该固体酸被用作可循环利用的催化剂,用于在室温和无溶剂条件下由芳族醛和乙酸酐合成1,1-二乙酸酯。