Asymmetric Synthesis of Allylic Sulfonic Acids: Enantio- and Regioselective Iridium-Catalyzed Allylations of Na<sub>2</sub>SO<sub>3</sub>
作者:Wei Liu、Xiao-ming Zhao、Hong-bo Zhang、Liang Zhang、Ming-zhu Zhao
DOI:10.1002/chem.201405058
日期:2014.12.15
An enantioselective allylation reaction of allylic carbonates with sodium sulfite (Na2SO3) catalyzed by Ir complex was accomplished, providing allylic sulfonic acids in good to excellent yields with a high level of enantio‐ and regioselectivities. (R)‐2‐Phenyl‐2‐sulfoacetic acid, a key intermediate for the synthesis of Cefsulodin and Sulbenicillin, was synthesized as well.
Ir配合物催化了碳酸烯丙酯与亚硫酸钠(Na 2 SO 3)的对映选择性烯丙基化反应,提供了高至优异收率的烯丙基磺酸,并具有高水平的对映和区域选择性。(R)-2-苯基-2-磺基乙酸也合成了头孢磺啶和磺基青霉素的关键中间体。