1: 81 percent / K2CO3 / acetone / 1.5 h / Heating 2: 1.) NaBH4; 2.) 2N NaOH 3.) 2N HCl / 1.) MeOH, 25 deg C, 0.5 h; 2.) 60 deg C, 0.25 h 3: 73 percent / K2CO3 / acetone / 18 h / Heating 4: 77 percent / LAH / diethyl ether / 2 h / Heating View Scheme

1: 81 percent / K2CO3 / acetone / 1.5 h / Heating 2: 1.) NaBH4; 2.) 2N NaOH 3.) 2N HCl / 1.) MeOH, 25 deg C, 0.5 h; 2.) 60 deg C, 0.25 h 3: 73 percent / K2CO3 / acetone / 18 h / Heating View Scheme