Highly Efficient Cs2CO3-Catalyzed 1,4-Addition of Me3SiCN to Enones with Water as the Additive
作者:Fu-Xue Chen、Jingya Yang、Yongbin Shen
DOI:10.1055/s-0029-1218653
日期:2010.4
A facile and efficient 1,4-addition of Me3SiCN to enones has been achieved with perfect regioselectivity using Cs2CO3 as catalyst. Thus, with 0.5 mol% of Cs2CO3 and 4 equivalents of H2O as the additive excellent yields (81-99%) of β-cyanoketones are obtained within one to five hours. Both aromatic and aliphatic enones are found suitable substrates for this protocol.
A Catalytic Enantioselective Conjugate Addition of Cyanide to Enones
作者:Yuta Tanaka、Motomu Kanai、Masakatsu Shibasaki
DOI:10.1021/ja801201r
日期:2008.5.1
The first synthetically useful catalytic enantioselectiveconjugateaddition of cyanide to enones is described. The optimized conditions involved a Gd catalyst (5 or 10 mol %) derived from ligands 3 or 4 and a 1:1 ratio of TBSCN and 2,6-dimethylphenol. The reaction exhibited excellent to high enantioselectivity and a wide substrate scope. Moreover, the 1,4-adduct was exclusively produced over the 1
POLYMERS FUNCTIONALIZED WITH PROTECTED OXIME COMPOUNDS CONTAINING A CYANO GROUP
申请人:Bridgestone Corporation
公开号:EP3143055A2
公开(公告)日:2017-03-22
[EN] POLYMERS FUNCTIONALIZED WITH PROTECTED OXIME COMPOUNDS CONTAINING A CYANO GROUP<br/>[FR] POLYMÈRES FONCTIONNALISÉS AVEC DES COMPOSÉS D'OXIME PROTÉGÉS CONTENANT UN GROUPE CYANO
申请人:BRIDGESTONE CORP
公开号:WO2015175280A2
公开(公告)日:2015-11-19
A method for preparing a functionalized polymer, the method comprising the steps of: (i) polymerizing monomer to form a reactive polymer, and (ii) reacting the reactive polymer with a protected oxime compound containing a cyano group.
Synthesis of β-Cyano Ketones Promoted by a Heterogeneous Fluoride Catalyst