1: 2.) NaBH4 / 1.) 2-propanol, reflux, 6 h, 2.) MeOH, RT, 3 h 2: 96 percent / benzene / 1.5 h 3: 93 percent / NH3 gas / Ambient temperature 4: 1.) HCl gas, 2.) Et3N / 1.) toluene, RT, overnight, 2.) 2-propanol, reflux, 3 h View Scheme

1: 96 percent / benzene / 1.5 h 2: 93 percent / NH3 gas / Ambient temperature 3: 1.) HCl gas, 2.) Et3N / 1.) toluene, RT, overnight, 2.) 2-propanol, reflux, 3 h View Scheme

1: 93 percent / NH3 gas / Ambient temperature 2: 1.) HCl gas, 2.) Et3N / 1.) toluene, RT, overnight, 2.) 2-propanol, reflux, 3 h View Scheme

hydrogenchloride; triethylamine 1.) toluene, RT, overnight, 2.) 2-propanol, reflux, 3 h; Yield given. Multistep reaction;