in diphenylether; chloroform; acetic acid; ethyl acetate

in diphenylether; chloroform; acetic acid; ethyl acetate

1: 93 percent / CrO3, H2SO4 / H2O; acetone / 0.5 h / Ambient temperature 2: 1.) AcOH / 1.) butanol, reflux, 5 h, 2.) diphenyl ether, from 206 deg C to 217 deg C, 30 min View Scheme

1: 60 percent / tetrahydrofuran; diethyl ether / 3.5 h / Ambient temperature 2: 93 percent / CrO3, H2SO4 / H2O; acetone / 0.5 h / Ambient temperature 3: 1.) AcOH / 1.) butanol, reflux, 5 h, 2.) diphenyl ether, from 206 deg C to 217 deg C, 30 min View Scheme

acetic acid 1.) butanol, reflux, 5 h, 2.) diphenyl ether, from 206 deg C to 217 deg C, 30 min; Yield given. Multistep reaction;