in acetonitrile T=65°C; 24 h;

Multi-step reaction with 2 steps 1: 85 percent / acetonitrile / 6 h / Ambient temperature2: 92 percent / Et3N / benzene / 1.) 0 deg C, 15 min, 2.) r.t., 24 h  

Multi-step reaction with 3 steps 1: HCl / methanol; CHCl3 / 1 h / Ambient temperature2: 85 percent / acetonitrile / 6 h / Ambient temperature3: 92 percent / Et3N / benzene / 1.) 0 deg C, 15 min, 2.) r.t., 24 h