[NH2:1][C:2]1[CH:3]=[C:4]([CH2:14]O)[CH:5]=[C:6]([C:8]2[N:12]([CH3:13])[N:11]=[N:10][N:9]=2)[CH:7]=1>CO.Cl.[Pd]>[CH3:14][C:4]1[CH:3]=[C:2]([NH2:1])[CH:7]=[C:6]([C:8]2[N:12]([CH3:13])[N:11]=[N:10][N:9]=2)[CH:5]=1A solution of [3-Amino-5-(1-methyl-1H-tetrazol-5-yl)-phenyl]-methanol (450 mg) in MeOH (20 ml) with a few drops of conc. HCl (aq) was hydrogenated on a H-cube apparatus at 30° C., and 10 bar with a flow rate of 1 mL/min using a Pd/C cartridge. After reaction completion, the mixture was concentrated in vacuum and the residue basified with a dilute K2CO3(aq). This was extracted with EtOAc and the organic layer was separated, dried and concentrated in vacuum. The residue was purified by flash chromatography (98:2 DCM:MeOH) to give the title compound (320 mg).
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