Process for the purification of 6.6 amp; rsquo; - (3.3 amp; rsquo; di - tert - butyl - 5.5 amp; rsquo; - Dimethoxy - 1,1 - Diphenyl - 2.2 amp; rsquo; amp; rsquo; - diyl) bis (Oxy) bis (dibenzo D, F 1,3,2 dioxafosfepina) (biphephos)

摘要

This relates to a process for the purification of 6.6 - [3,3 - di Tert Butyl - 5.5 - Dimethoxy - 1,1 - Diphenyl - 2.2 - diyl) bis (Oxy)] bis (dibenzo [D, F] [1,3,2] dioxafosfepina), abbreviated biphephos formula (1).Claim 1, a process for the purification of 6.6 - [(3.3 - di Tert Butyl - 5.5 - Dimethoxy - 1,1 - Diphenyl - 2.2 - diyl) bis (Oxy)] bis (dibenzo [D, F] [1,3,2] dioxafosfepina) (biphephos), characterized in that it comprises the biphephos Wash with a Solvent Selected among the Group comprising ethyl acetate, ANISOLE, Ortho xylene, Toluene, acetone,2 - propanol - 10 C5 alkanes, or mixtures thereof, or a mixture of Solvents comprising one or more of these Solvents, and / or recrystallizes from Solvent or mixture of solvents.