New and efficient dehalogenative coupling and reduction of α-haloketones with active nickel complex. Facile syntheses of 1,4-diketones and bicyclo[4.2.O]oct-3-ene-2,5-diones
作者:Masahiko Iyoda、Masahiro Sakaitani、Atsuko Kojima、Masaji Oda
DOI:10.1016/s0040-4039(00)89232-1
日期:1985.1
The active nickel complex generated in situ by reduction of NiBr2(PPh3)2 with zinc in the presence of Et4NI is a useful reagent for the dehalogenative coupling of phenacyl halides to 1,4-diaryl-1,4-diketones and for the dechlorination of 3,4-dichlorobicyclo[4.2.0]-octane-2,5-diones to bicyclo[4.2.0]oct-3-ene-2,5-diones.
在Et 4 NI存在下,通过用镍还原NiBr 2(PPh 3)2原位生成的活性镍络合物,对于将苯甲酰卤与1,4-二芳基-1,4-二酮和用于将3,4-二氯双环[4.2.0]-辛烷-2,5-二酮脱氯为双环[4.2.0]辛-3-烯-2,5-二酮。