potassium acetate in acetic acid 1 h; Heating;

hydrogenchloride 1 h; Heating;

hydrogenchloride 1 h; Heating;

1: lithium diisopropylamide / 1.) THF, -80 deg C, 1.5 h, 2.) -80 deg C, 1 h; room temp., overnight 2: 98 percent / CrO3 / acetone / 3 h / Ambient temperature 3: 73 percent / CH3COOK / acetic acid / 1 h / Heating View Scheme

1: lithium diisopropylamide / 1.) THF, -80 deg C, 1.5 h, 2.) -80 deg C, 1 h; room temp., overnight 2: 98 percent / CrO3 / acetone / 3 h / Ambient temperature 3: 73 percent / CH3COOK / acetic acid / 1 h / Heating View Scheme