C([O:8][C:9]1[CH:16]=[C:15]([N:17]2[CH:21]=[CH:20][CH:19]=[N:18]2)[CH:14]=[CH:13][C:10]=1[C:11]#[N:12])C1C=CC=CC=1.C([O-])=O.[NH4+]>C1COCC1.[Pd]>[OH:8][C:9]1[CH:16]=[C:15]([N:17]2[CH:21]=[CH:20][CH:19]=[N:18]2)[CH:14]=[CH:13][C:10]=1[C:11]#[N:12]To 0.395 g of the material from Step B, above, dissolved in 10 mL THF, is added a catalytic amount of 10% Pd/C and excess ammonium formate. The reaction is heated to 50° C. for 45 minutes. Upon cooling, celite is added. The reaction is then gravity filtered and concentrated in vacuo. The residue is redissolved in ethyl acetate and washed with water, brine, dried over sodium sulfate, filtered and concentrated in vacuo to give 0.152 g of the final title compound (57.1%).
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