In the presence of a catalytic amount of iodine, hexamethyldisilane can reductively silylate p-quinones under mild conditions to afford 1,4-bis(trimethylsiloxy)arenes in high yields.
The reaction mechanism of photo-induced electrontransferreactions from hexamethyldisilane to quinones in chloroform solution was studied at room temperature by means of a CIDNP technique. With irradiation, the formation of the corresponding mono- and di-trimethylsilyl hydroquinones and trimethylsilyl chloride was confirmed by GC, GC-MS, and 1H NMR spectra. The absorptive CIDNP phase of the mono-trimethylsilyl
在室温下,利用CIDNP技术研究了六甲基二硅烷在氯仿溶液中由光诱导的电子转移反应从醌到醌的反应机理。通过辐射,通过GC,GC-MS和1 H NMR光谱确认了相应的单-和二-三甲基甲硅烷基氢醌和三甲基甲硅烷基氯的形成。单三甲基甲硅烷基对苯二酚的吸收性CIDNP相表明该反应前体是六甲基二硅烷阳离子自由基和醌阴离子自由基的三重自由基离子对,并且前者自由基在后者的SiSi键裂变之前与后者发生反应。 。