Alkyl 2-(2-benzothiazolylsulfinyl)acetates as useful synthetic reagents for alkyl 4-hydroxyalk-2-enoates by sulfinyl-Knoevenagel reaction
作者:Zhenjun Du、Toshihiro Kawatani、Kazuhide Kataoka、Rikiya Omatsu、Junzo Nokami
DOI:10.1016/j.tet.2012.01.057
日期:2012.3
[R′CH(OH)CHCHCO2R], which are ubiquitous structures in biologically active natural products and useful building blocks for organic synthesis of chiral compounds. From the optically pure (R)-2-(2-benzothiazolylsulfinyl)acetates (>99% ee) prepared by the enzymatic kinetic resolution of (±)-2-(2-benzothiazolylsulfinyl)acetates, optically active 4-hydroxyalk-2-enoates (up to 91% ee) have been obtained in good
已发现2-(2-苯并噻唑基亚磺酰基亚砜基)乙酸异丙酯,乙基酯和甲基酯是用于亚磺酰基-Knoevenagel与各种醛反应以直接得到相应的4-羟基烷-2-烯酸酯[R'CH(OH)CH]的有用合成试剂CHCO 2 R],它们是具有生物活性的天然产物中普遍存在的结构,是用于手性化合物有机合成的有用组成部分。从通过(±)-2-(2-苯并噻唑基亚磺酰基)乙酸酯的酶促动力学拆分制备的光学纯的(R)-2-(2-苯并噻唑基亚磺酰基)乙酸酯(> 99%ee)中,旋光的4-羟基烷-2-获得了良好的烯酸含量(高达91%ee)。