Enantioselective synthesis of threo-α,β-dihydroxyphosphonates by asymmetric dihydroxylation of vinylphosphonates. An application to the stereocontrolled synthesis of (4S,5S)-4-diethylphosphono-5-hydroxymethyl-2,2-dimethyl-1,3-dioxolane
作者:Tsutomu Yokomatsu、Yoshinori Yoshida、Kenji Suemune、Takehiro Yamagishi、Shiroshi Shibuya
DOI:10.1016/0957-4166(95)00014-g
日期:1995.2
The asymmetric dihydroxylation (AD) reaction of vinylphosphonates with AD-mix-α and -β reagents was successfully applied to the enantioselective synthesis of threo-α, β-dihydroxyphosphonates. β-Aryl substituents on the vinyl phosphonates were found to be good directors for the reaction with respect to the yield and enantioselectivity. The utility of chiral α, β-dihydroxyphosphonate 2c was illustrated
与AD混合-α和-β试剂vinylphosphonates的不对称二羟基化(AD)反应成功地应用于的对映选择性合成苏- α,β-dihydroxyphosphonates。发现乙烯基膦酸酯上的β-芳基取代基在产率和对映选择性方面是反应的良好指导。通过立体控制合成(4 S,5 S)-4-二乙基膦酰基-2,2-二甲基-5-羟甲基-1,3-二氧戊环6(一种可能有用的ron ),说明了手性α,β-二羟基膦酸酯2c的用途。 α-杂原子取代的膦酸酯的不对称合成。