Nickel-catalysed butatriene cyclizations: a simple and efficient synthesis of radialenes (polymethylenecycloalkanes)
作者:Masahiko Iyoda、Shigeyoshi Tanaka、Masanori Nose、Masaji Oda
DOI:10.1039/c39830001058
日期:——
4-dihalogeno-2,5-dimethylhexa-2,4-dienes (1) and (5) with tetrakis(triphenylphosphine)nickel(0) in benzene, tetrahydrofuran, or N,N-dimethylformamide at 50 °C yields octamethyl[4]radialene (2) and/or dodecamethyl[6]radialene (3), in fairly good yields, via co-oligomerisation of 2,5-dimethylhexa-2,3,4-triene (6).
在苯,四氢呋喃或N,N-二甲基甲酰胺中,在苯,四氢呋喃或N,N-二甲基甲酰胺中用四(三苯基膦)镍(0)处理3,4-二卤代2,5-二甲基己基2,4-二烯(1)和(5)通过2,5-二甲基六-2,3,4-三烯(6)的共低聚,以相当好的产率产生八甲基[4]](2)和/或十二甲基[ 6] radi(3)。