Tail-to-tail Cross-dimerization of Methyl Methacrylate/Methacrylonitrile with Acrylates Catalyzed by N-Heterocyclic Carbene
作者:Shin-ichi Matsuoka、Yuki Fukumoto、Masato Suzuki
DOI:10.1246/cl.170263
日期:2017.7.5
The tail-to-tail cross-dimerization of methyl methacrylate (MMA)/methacrylonitrile (MAN) with acrylates has been realized for the first time by an N-heterocyclic carbene organocatalysis to produce new difunctional compounds, four 2-methylhex-2-enedioates and three 5-cyanohex-4-enoates, in moderate to good isolated yields. The high selectivity was achieved by the dropwise addition of acrylates, leading
Cooperative N-Heterocyclic Carbene/Brønsted Acid Catalysis for the Tail-to-Tail (Co)dimerization of Methacrylonitrile
作者:Terumasa Kato、Shin-ichi Matsuoka、Masato Suzuki
DOI:10.1021/jo500514e
日期:2014.5.16
The first tail-to-tail dimerization of methacrylonitrile (MAN) has been realized by the cooperative use of N-heterocycliccarbene (NHC) and Brønstedacid catalysts, producing 2,5-dimethylhex-2-enedinitrile with the E/Z ratio of 24:76. Although the NHC alone was not effective for the catalysis, the addition of alcohols resulted in the significant increase of the dimer yield up to 82% in the presence