作者:Tomotaka Okino、Satoru Nakamura、Tomihiro Furukawa、Yoshiji Takemoto
DOI:10.1021/ol0364531
日期:2004.2.1
[reaction: see text] The aza-Henry reaction of imines with nitroalkanes was promoted by chiral thiourea with an N,N-dimethylamino group to give beta-nitroamines with good enantioselectivity. Various N-protected imines were examined as substrates. N-Phosphinoylimine gave the best result in terms of chemical yield and enantioselectivity (up to 91% yield, up to 76% ee).
[反应:见正文]具有N,N-二甲基氨基的手性硫脲可促进亚胺与硝基烷的氮杂-亨利反应,从而产生具有良好对映选择性的β-硝基胺。检查了各种N-保护的亚胺作为底物。就化学产率和对映选择性而言,N-膦基嘧啶的效果最佳(产率高达91%,ee高达76%)。