Abstract The heterogeneous catalyst, silica??supported sodium hydrogen sulfate (NaHSO4· SiO2) has been found to be highly efficient in carrying out the transformation of p?? hydroxybenzyl alcohols at room temperature to p??hydroxybenzyl ethers and thioethers in very high yields.# Part 31 in the series,“Studies on Novel Synthetic Methodologies,” For part 30 see Ref. 1