4 A molecular sieve T=20°C;

4 A molecular sieve T=20°C;

4 A molecular sieve T=20°C;

Amberlite IRA-68 (HO-); acetic acid 1.) MeOH, water, 24 h, RT; 2.) 24 h, RT; 3.) ether, 60 min, 60 deg C; Yield given. Multistep reaction. Yields of byproduct given;

Amberlite IRA-68 (HO-); acetic acid 1.) MeOH, water, 24 h, RT; 2.) 24 h, RT; 3.) ether, 60 min, 60 deg C; Yield given. Multistep reaction. Yields of byproduct given;

Amberlite IRA-68 (HO-); acetic acid 1.) MeOH, water, 24 h, RT; 2.) 24 h, RT; 3.) ether, 60 min, 60 deg C; Yield given. Multistep reaction. Yields of byproduct given;

toluene-4-sulfonic acid T=20°C; 5 h;

Amberlite IRA-68 (HO-); acetic acid 1.) MeOH, water, 24 h, RT; 2.) 24 h, RT; 3.) ether, 60 min, 60 deg C; Yield given. Multistep reaction. Yields of byproduct given;

1: 83 percent / p-toluenesulfonic acid / 3 h / pH 3-4 2: 89 percent / acetic acid; H2O / 5 h / Ambient temperature 3: 1.) dibutyltin oxide, 2.) Br2, tributyltin methoxide / 1.) 0 deg C, 2.) CH2Cl2 4: aq. H2SO4 / 3.25 h / 60 °C 5: sodium cyanoborohydride / methanol / 336 h / in a refrigerator 6: 49 percent / H2, HCl / Pd(OH)2 on carbon / methanol / 5 h / 760 Torr View Scheme

4 A molecular sieve T=20°C;