The reaction product consists of equal amounts of In this case, the directive influences of the hyphosphoric acid as to the positions occupied by the entering t-butyl group. three of the possible four position isomers were isolated and identified. 4-and 5-t-butylguaiacol with about 10 mole per cent. of 6-t-butylguaiacol. droxy and methoxy functions are of equal strength in regard to substitution in the para positions.
