A VERSATILE PREPARATION OF 2,6-DI-t-BUTYLBROMOBENZENE. APPLICATION TO STERIC PROTECTION FOR ORGANOPHOSPHORUS COMPOUNDS IN LOW COORDINATION STATES
2,6-di-t-butylbromobenzene (5) was prepared from 2,4,6-tri-t-butyl-bromobenzene by ipso nitration followed by reduction of the nitro group and deamination.The diphosphene (8) and 1,3-diphosphaallene (10) were prepared.