Tetraarylethylenes from Diarylmethanones and Hexachlorodisilane: The “Sila-McMurry” Reaction
作者:Maximilian Moxter、Jan Tillmann、Matthias Füser、Michael Bolte、Hans-Wolfram Lerner、Matthias Wagner
DOI:10.1002/chem.201603720
日期:2016.11.2
Hexachlorodisilane reacts with diarylmethanones (aryl=C6H5, 4‐MeC6H4, 4‐tBuC6H4, 4‐ClC6H4, 4‐BrC6H4) to furnish the corresponding tetraarylethylenes in good yields. The reductive conversion requires temperatures of about 160 °C and reaction times of 60–72 h. In the initial step, the Lewis‐basic carbonyl groups likely generate low‐valent [SiCl2] as an analogue of [TiCl2] in the classical McMurry reaction
与diarylmethanones(芳基= C发生反应六氯乙硅烷6 ħ 5,4-MEC 6 ħ 4,4-吨BUC 6 ħ 4,4-CLC 6 ħ 4,4- BRC 6 ħ 4),得到良好的收率相应tetraarylethylenes。还原转化需要约160°C的温度和60-72 h的反应时间。在初始步骤中,路易斯碱羰基可能会生成低价的[SiCl 2 ]作为[TiCl 2 ]的类似物]在经典的McMurry反应中。偶合序列进一步通过已分离为关键中间体的苯并匹氮酮进行。