A new bulky bromobenzene, 2-bromo-1,3-di-tert-butyl-5-methoxybenzene, was prepared and utilized to preparations of the corresponding diphosphene and fluorenylidenephosphine including low-coordinate phosphorus atom(s). An electronic perturbation of the p-methoxy group in the system was indicated by UV–vis spectra and 31P NMR chemical shifts.
制备了一种新的大块溴苯,2-溴-1,3-二-叔丁基-5-甲氧基苯,并用于制备相应的二膦和含低配位磷原子的芴基膦。紫外-可见光谱和 31 P NMR 化学位移表明系统中对甲氧基的电子扰动。