silver(I) acetate; di(n-butyl)tin oxide; N,N-dimethyl-formamide; cesium fluoride 1.) CHCl3, MeOH, reflux; 2.) RT, 17 h; study of selective monobenzylation with various benzyl halides, solvents and without AcOAg; Product distributionMechanism;

toluene-4-sulfonic acid in dichloromethane 30 h; Heating;

toluene-4-sulfonic acid in acetone T=0°C; 0.5 h; Yield given;

toluene-4-sulfonic acid

barium dihydroxide in water

di(n-butyl)tin oxide; N,N-dimethyl-formamide; cesium fluoride 1.) chloroform, methanol, reflux, 3 h; 2.) 17 h, RT; Yield given. Multistep reaction. Yields of byproduct given;