Valence Isomerism between Sterically Protected Methylenephosphine<i>P</i>-Sulfide and 1,2-Thiaphosphirane
作者:Kozo Toyota、Hiroaki Takahashi、Kazuho Shimura、Masaaki Yoshifuji
DOI:10.1246/bcsj.69.141
日期:1996.1
Reaction of (diphenylmethylene)(2,4,6-tri-t-butylphenyl)phosphine with elemental sulfur afforded 3,3-diphenyl-2-(2,4,6-tri-t-butylphenyl)-1,2-thiaphosphirane 2-sulfide via methylenephosphine P-sulfide. Desulfurization reaction of the thiaphosphirane 2-sulfide with tris(dimethylamino)phosphine gave 3,3-diphenyl-2-(2,4,6-tri-t-butylphenyl)-1,2-thiaphosphirane. Valence isomerization occurred between the methylenephosphine P-sulfide and the thiaphosphirane by heat or by photo-irradiation. The structures of the methylenephosphine, the methylenephosphine P-sulfide, and the thiaphosphirane were analyzed by X-ray crystallography.
(二苯基亚甲基)(2,4,6-三丁基苯基)膦与元素硫反应,通过亚甲基膦 P 硫化物得到 3,3-二苯基-2-(2,4,6-三丁基苯基)-1,2-硫代磷环烷 2-硫化物。硫代环氧乙烷 2-硫化物与三(二甲基氨基)膦发生脱硫反应,生成 3,3-二苯基-2-(2,4,6-三丁基苯基)-1,2-硫代环氧乙烷。通过加热或光照,亚甲基硫化膦和硫代环氧乙烷之间发生了价态异构。X 射线晶体学分析了亚甲基膦、亚甲基膦 P-硫化物和硫代环氧乙烷的结构。