p-Toluenesulfonic acid monohydrate → HCID 21345177, compound

Reaction equation

[F:1][C:2]1[C:7]([O:8][CH2:9][C@@H:10]2[CH2:13][CH2:12][N:11]2C(OCC2C=CC=CC=2)=O)=[CH:6][CH:5]=[C:4]([CH3:24])[N:3]=1.O.[C:26]1([CH3:36])[CH:31]=[CH:30][C:29]([S:32]([OH:35])(=[O:34])=[O:33])=[CH:28][CH:27]=1>CCO.[Pd]>[S:32]([C:29]1[CH:30]=[CH:31][C:26]([CH3:36])=[CH:27][CH:28]=1)([OH:35])(=[O:34])=[O:33].[F:1][C:2]1[C:7]([O:8][CH2:9][C@@H:10]2[CH2:13][CH2:12][NH:11]2)=[CH:6][CH:5]=[C:4]([CH3:24])[N:3]=1

Participants

Procedure

2-Fluoro-6-methyl-3-(1-Cbz-2-(S)-azetidinylmethoxy)pyridine from Example 117d (714 mg, 2.16 mmol) was combined with 10% Pd/C (50 mg) and p-toluenesulfonic acid monohydrate (830 mg, 4.36 mmole) in 30 mL of EtOH, and the mixture was stirred under an H2 atmosphere for 16 hours. The mixture was filtered, concentrated, the residue was triturated with ether, and the product was recrystallized from ethyl acetate/ether to yield 480 mg (60%) of the title compound. mp 141-143° C. 1H NMR (D2O 300 MHz) δ: 2.40 (s, 6H), 2.65-2.71 (m, 2H), 4.07-4.16 (m, 2H), 4.43(d, J=4.5, 2H), 4.81-95 (m, 1H), 7.16 (d, J=8.0, 1H), 7.37 (d,J=8.0, 2H), 7.55 (dd, J=8.0, 2.5, 1H), 7.70 (d,J=8.0, 2H). MS (DCI/NH3) m/e 197 (M+H)+ 214 (M+NH4)+. Anal. calcd. for C10H13FN2O.C7H8S: C, 55.42; H, 5.75; N, 7.60. Found: C, 55.27; H, 5.69; N, 7.44. [α]D −3.2 (c 1, MeOH).