Metal-Free Azidation of α-Hydroxy Esters and α-Hydroxy Ketones Using Azidotrimethylsilane
作者:Xiao-Ping Yin、Lei Zhu、Jian Zhou
DOI:10.1002/adsc.201701345
日期:2018.3.20
We herein report a commercially available perchloric acid catalyst capable of catalyzing the azidation of α‐hydroxy esters, α‐hydroxy ketones and taddols using azidotrimethylsilane in dichloromethane at room temperature. Various substituted tertiary alcohols are well tolerated in this reaction. Cα‐tetrasubstituted α‐amino acid derivatives were prepared by one‐pot sequential azidation and hydrogenation
我们在此报告了一种可商购的高氯酸催化剂,它能够在室温下在二氯甲烷中使用叠氮三甲基硅烷催化α-羟基酯,α-羟基酮和他达醇的叠氮化。在该反应中,各种取代的叔醇具有良好的耐受性。Ç α -tetrasubstitutedα氨基酸衍生物通过一锅顺序叠氮化和氢化方法制备。这种新开发的方法的优势包括操作简便,催化剂容易获得,规模放大能力以及良好的官能团兼容性。