Asymmetric synthesis of cis-2,4-disubstituted azetidin-3-ones from metal carbene chemistry
作者:Antonio Carlos B. Burtoloso、Carlos Roque D. Correia
DOI:10.1016/j.jorganchem.2005.07.016
日期:2005.12
Several chiral cis-2,4-disubstituted azetidin-3-ones were prepared as single diastereoisomers from N-protected amino acids, employing a highly stereoselective copper carbenoid N–H insertion reaction of diazoketones. These azetidin-3-ones were then converted into fully substituted azetidines in a few steps in good to high yields.
利用重氮酮的高度立体选择性的铜类碳氢化合物N-H插入反应,由N-保护的氨基酸制备了几种手性顺式-2,4-二取代的氮杂环丁烷-3-酮,作为单一的非对映异构体。然后将这些氮杂环丁烷-3-酮以良好至高收率的几步转化为完全取代的氮杂环丁烷。