1-phenyl-1H-tetrazol-5-yl chloride; hydrogen; potassium carbonate; palladium on activated charcoal 1) acetone, reflux, 18 h, 2) THF, benzene, 40 deg C, 1 atm, 24 h; Yield given. Multistep reaction;

1: 1.) 9-BrBBN, 2.) H2N(CH2)2OH / 1.) CH2Cl2, 20 deg C, 24 h 2: 1.) NaH, 5-chloro-1-phenyl-1H-tetrazole, 2.) H2 / 2.) 10percent Pd/C / 1.) DMF, 2.) EtOH, THF, 40 deg C, 10 atm, 20 h View Scheme