1: 8.3 g / diethyl ether / 12 h / Ambient temperature 2: 86 percent / rhodium (II) acetate / CH2Cl2 / 0.5 h / 25 °C / other α-diazoketone derived from furanyl propionic acid 3: 100 percent / iodine / benzene / 42 h / 80 °C View Scheme

triethylamine

thionyl chloride in dichloromethane 3 h; Heating;