Organocatalytic Asymmetric Synthesis of Spiro-Tetrahydrothiophene Oxindoles Bearing Four Contiguous Stereocenters by One-Pot Michael-Henry-Cascade-Rearrangement Reactions
Asymmetric construction of tetrahydrothiophenes with four contiguous stereocenters remains a formidable challenge. Herein, the bottleneck was addressed by an unprecedented one‐pot Michael–Henry‐cascade–rearrangement reaction that could simultaneously create four consecutive stereogenic centers including two tetrasubstitutedcarbon stereocenters. The highly functionalized chiral spirotetrahydrothiophene
Asymmetric Michael addition of α-fluoro-α-nitroalkanes to nitroolefins: facile preparation of fluorinated amines and tetrahydropyrimidines
作者:Jacek Kwiatkowski、Yixin Lu
DOI:10.1039/c4cc03513e
日期:——
An asymmetric Michael addition of α-fluoro-α-nitroalkanes to nitroolefins was developed, and the products were obtained in good chemical yields and with high stereoselectivities.
Asymmetric Michael addition of α-fluoro-α-nitro esters to nitroolefins: towards synthesis of α-fluoro-α-substituted amino acids
作者:Jacek Kwiatkowski、Yixin Lu
DOI:10.1039/c4ob02486a
日期:——
α-Fluoro-α-nitro esters were used as reaction partners in Michaeladdition to nitroalkenes, and the products were obtained in excellent chemical yields and with high enantioselectivities. Moreover, α-fluoro-α-amino ester with a quaternary α-carbon was prepared for the first time.