Electrophilic aromatic substitution. 26. Regioselective halo- and carbodesilylation of (trimethylsilyl)-1-methylpyrazoles
作者:Franz Effenberger、Andreas Krebs
DOI:10.1021/jo00198a020
日期:1984.11
EFFENBERGER, F.;KREBS, A., J. ORG. CHEM., 1984, 49, 4687-4695
作者:EFFENBERGER, F.、KREBS, A.
DOI:——
日期:——
Copper-Catalyzed Asymmetric Protoboration of β-Amidoacrylonitriles and β-Amidoacrylate Esters: An Efficient Approach to Functionalized Chiral α-Amino Boronate Esters
作者:Lili Chen、Xiaoliang Zou、Haonan Zhao、Senmiao Xu
DOI:10.1021/acs.orglett.7b01740
日期:2017.7.7
delivering a series of stable functionalized chiral α-amino boronate esters in good yields and enantioselectivities under mild reaction conditions. The current method is also applicable for gram-scale synthesis without erosion of enantioselectivity. This work provides an attractive and complementary approach to synthesizing enantioriched chiral α-amino boronate esters.
Chiral α-aminosilane and itsderivatives have found potential applications in pharmaceuticals. Yet there are rare examples have been reported for the synthesis of these molecules. Herein we report a catalytic asymmetric conjugate silylation reactions of β-amido-acrylonitriles and β-amido-acrylates for the first time in the presence of catalytic amount of chiral N-heterocyclic carbene (NHC)/Copper(I)