The first example for asymmetric reaction of diazomethylphosphonates with α-ketoesters was realized in the catalysis of hydroquinidine-derived bifunctional thiourea. A methodology was established to access a series of chiral α-diazo-β-hydroxyphosphonate derivatives containing various functional groups with high enantioselectivities and yields. The resulting products could be further transformed into
重氮基
甲基膦酸酯与α-
酮酸酯不对称反应的第一个实例是在
对苯二酚衍生的双官能
硫脲的催化中实现的。建立了一种方法,以获取一系列具有高对映选择性和高收率的,包含各种官能团的手性α-重氮-β-羟基
膦酸酯衍
生物。所得产物可进一步转化为手性叔β-羟基
膦酸酯和α-卤代
磷霉素衍
生物,尤其是α-
氟化物类似物。