Practical Synthesis of (<i>S</i>)‐(+)‐3‐Octanol by Lipase‐Catalyzed Enantioselective Acetylation
作者:Yoshifumi Yuasa、Yoko Yuasa
DOI:10.1080/00397910600616651
日期:2006.7
Abstract (S)‐(+)‐3‐Octanol (S)‐1 was prepared in high enantiomeric excess through catalyzed acetylation of racemic alcohol 1 by using lipase from Candida antarctica (Chirazyme L‐2) in the presence of vinyl acetate in toluene at 30°C. The pure (S)‐1 was obtained in 73% isolated yield with 62% conversion. Moreover, acetate (R)‐2 was converted to (S)‐1 via mesylation and followed by hydrolysis using sodium
摘要 (S)-(+)-3-Octanol (S)-1 通过使用来自南极念珠菌的脂肪酶 (Chirazyme L-2) 在乙酸乙烯酯的存在下在甲苯中催化外消旋醇 1 乙酰化制备高对映体过量的 (S)-(+)-3-Octanol (S)-1在 30°C。纯 (S)-1 的分离产率为 73%,转化率为 62%。此外,乙酸盐 (R)-2 通过甲磺酰化转化为 (S)-1,然后使用碳酸氢钠溶液水解,产率为 44%。