A three-component cascade reaction of salicylaldehyde, malononitrile/cyanoacetate and nitromethane catalysed by chiral tertiary amino-thioureas was developed, which leads to the production of highly functionalized 2-amino-4H-chromenes in good yields with good to excellent enantioselectivities.
在手性叔胺
硫脲的催化下,开发了
水杨醛、
丙二腈/
氰基
乙酸酯和
硝基甲烷的三组分级联反应,从而以良好的产率和良好至卓越的对映选择性制备出高度官能化的 2-
氨基-4H-苯并
吡喃。