3-[[(9R)-6'-Methoxycinchonan-9-yl]amino]-4-[[4-(trifluoromethyl)phenyl]amino]-3-cyclobutene-1,2-dione, min. 85%

Technical Notes：
1.Catalyst for highly enantioselective Michael addition of nitroalkanes to chalcones [1], nitroalkanes to nitroalkenes [2], malononitrile to chalcones.
2.Organocatalyst for cascade aza-Michael/Michael addition [4] and for the asymmetric Michael/cyclization cascade reactions [5] for synthesis ofh ighly functionalized spiropyrazolone te tra hyd roquinolines and pyrrolidonyl spirooxindoles.