Highly enantioselective conjugate addition of fluoromalonates to nitroalkenes using bifunctional organocatalysts
作者:Bo Kyung Kwon、Sun Mi Kim、Dae Young Kim
DOI:10.1016/j.jfluchem.2009.06.002
日期:2009.8
The enantioselective conjugate addition of fluoromalonates to aromatic nitroalkenes catalyzed by chiral amine-thiourea bifunctional organocatalysts generated a stereocenter at the carbon bearing the aromatic group and an adjacent prochiral center from the fluoromalonate. Treatment of fluoromalonates with aromatic nitroalkenes under mild reaction conditions afforded the corresponding 2-fluoro-2-(2-
氟丙二酸酯的对映选择性共轭加成到由手性胺-硫脲双官能有机催化剂催化的芳族硝基烯烃上,在带有芳族基团的碳和与氟丙二酸酯相邻的前手性中心处产生立体中心。在温和的反应条件下用芳族硝基烯烃处理氟代丙二酸酯,可得到相应的2-氟-2-(2-硝基-1-芳基乙基)丙二酸酯,具有较高的收率(72–93%)和出色的对映选择性(91–98%ee)。