1: 1.) phosphoryl chloride / 1.) 1,2-dichloroethane; 2.) 70 deg C, 3h 2: 90 percent / 2 N HCl / 0.08 h 3: 1.) 2 N NaOC2H5; 2.) 2 N CH3COOH / 1.) EtOH, reflux, 7 h; 2.) acetone View Scheme

1: 90 percent / 2 N HCl / 0.08 h 2: 1.) 2 N NaOC2H5; 2.) 2 N CH3COOH / 1.) EtOH, reflux, 7 h; 2.) acetone View Scheme

sodium ethanolate; acetic acid 1.) EtOH, reflux, 7 h; 2.) acetone; Yield given. Multistep reaction;