Chemoenzymatic Resolution of β-Azidophenylethanols by<i>Candida antarctica</i>and their Application for the Synthesis of Chiral Benzotriazoles
作者:Lenilson C. Rocha、Isac G. Rosset、Gliseida Z. Melgar、Cristiano Raminelli、André L. M. Porto、Alex H. Jeller
DOI:10.5935/0103-5053.20130181
日期:——
The kinetic resolutions of (±)-β-azidophenylethanols were carried out using lipase from Candida antarctica, and enantiomerically enriched (R)-β-azidophenylethanols and their corresponding (S)-β-azidophenylethyl acetates were obtained in good enantiomeric excesses (up to > 99%). The enantiomerically enriched (R)-β-azidophenylethanols were subjected to cyclization reaction with 2-(trimethylsilyl)phenyl
使用来自南极假丝酵母的脂肪酶进行(±)-β-叠氮基苯乙醇的动力学拆分,得到对映体富集的(R)-β-叠氮基苯乙醇及其相应的(S)-β-叠氮基苯乙酸乙酯,其对映体过量良好(最高可达> 99%)。使对映体富集的(R)-β-叠氮基苯乙醇与2-(三甲基甲硅烷基)苯基三氟甲磺酸酯和CsF进行环化反应,以[3 + 2]的高收率(75-86%)生成手性1,2,3-苯并三唑化合物环加成,其中涉及苯炔形成。