New sterically hindered bis-catechol, bis-o-quinone and its bis-triphenylantimony(v) bis-catecholate. 3,5-Di-tert-butyl-6-methoxymethylcatechol as alkylating agent

Alkylation of 1,3,5-trimethoxybenzene with 3,5-di-tert-butyl-6-methoxymethylcatechol affords new sterically hindered biscatechol, whose oxidation gives the corresponding bis-o-quinone. Its treatment with triphenylstibine leads to bis-triphenylantimony(v) bis-catecholate.