Phospho sulfonic acid as an efficient and recyclable solid acid catalyst for the solvent-free preparation of acylals

被引：24
|
作者：
Kalla, Reddi Mohan Naidu [1 ]
Park, Huiju [1 ]
Hoang, Trinh Thi Kim [1 ]
Kim, Ii [1 ]
机构：
[1] Pusan Natl Univ, Dept Polymer Sci & Engn, PLUS Ctr Adv Chem Technol BK21, Pusan 609735, South Korea
来源：
TETRAHEDRON LETTERS | 2014年 / 55卷 / 39期
基金：
新加坡国家研究基金会;
关键词：
Acylal; Solid acid catalysis; Phospho sulfonic acid; Solvent-free method; CHEMOSELECTIVE SYNTHESIS; REUSABLE CATALYST; 1,1-DIACETATES; ALDEHYDES; 2-AMINO-3-CYANO-4H-CHROMEN-4-YLPHOSPHONATES; ACETALIZATION; DEPROTECTION; ACETYLATION; DIACETATES; CONVERSION;
D O I：
10.1016/j.tetlet.2014.07.115
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
Phospho sulfonic acid (PSA) acts as a highly effective and reusable catalyst for the chemo-selective protection of aldehydes with acetic anhydride under solvent-free conditions. The desirable features of this new catalytic methodology include its sustainability, effectiveness in the absence of solvent, a facile work-up procedure, and economic viability. PSA is fully characterized by Fourier transform infrared spectroscopy, wide-angle X-ray scattering analysis, and scanning electron microscopy with energy dispersive X-ray spectroscopy. The catalyst can be reused several times without significant loss of activity. In addition, no chromatographic separations are needed to obtain the desired products. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：5373 / 5376
页数：4
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