Thiourea catalyzed organocatalytic enantioselective Michael addition of diphenyl phosphite to nitroalkenes
作者:Ana Alcaine、Eugenia Marqués-López、Pedro Merino、Tomás Tejero、Raquel P. Herrera
DOI:10.1039/c0ob01059f
日期:——
Bifunctional thiourea catalyzes the enantioselective Michael addition reaction of diphenyl phosphite to nitroalkenes. This methodology provides a facile access to enantiomerically enriched β-nitrophosphonates, precursors for the preparation of synthetically and biologically useful β-aminophosphonic acids. DFT level of computational calculations invoke the attack of the diphenyl phosphite to the nitroolefin
双功能 硫脲 催化对映体的迈克尔对映选择性迈克尔加成反应 亚磷酸二苯酯硝基烯烃。该方法提供了对映异构体富集的β-硝基膦酸酯的便捷途径,β-硝基膦酸酯是制备合成和生物学上有用的β-氨基膦酸的前体。DFT级别的计算计算会引起Re面对亚磷酸二苯酯对硝基烯烃的攻击,这为文献中这一鲜为人知的过程更新提供了光明。计算结果支持在最终加合物中获得的绝对构型。