Catalytic Asymmetric Rearrangement of Allylic Trichloroacetimidates. A Practical Method for Preparing Allylic Amines and Congeners of High Enantiomeric Purity
作者:Carolyn E. Anderson、Larry E. Overman
DOI:10.1021/ja037086r
日期:2003.10.1
rearrangement of (E)-allylic trichloroacetimidates to provide transposed allylic trichloroacetamides of high enantiopurity, a transformation that underlies the first truly practical method for transforming prochiral allylicalcohols to enantioenriched allylic amines and congeners. The high functional group compatibility of this asymmetric rearrangement and the demonstrated broad utility in synthesis of the allylic
Diastereospecific Enantiodivergent Allylation of Pyrazolones as an Entry to β‐Aminoamides
作者:Nick Wannenmacher、Martin Heberle、Xin Yu、Aysegül Demircan、Daniel M. Wanner、Camilla Pfeffer、René Peters
DOI:10.1002/adsc.202200185
日期:2022.10.4
A diastereospecificenantiodivergentallylation of pyrazolones is reported which is catalyzed by a planar chiral pentaphenylferrocene based palladacycle. With the same catalyst batch both product enantiomers were selectively available. The method is applicable to structurally diverse substrates and gave products with enantiomeric excesses between 85 and 94%. In addition, we could show that pyrazolones