2-Methylbenzenesulfonic acid hydrate → HCID 21345163, 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(O[CH2:17][C:18]2[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=2)=O)=[CH:6][CH:5]=[C:4]([F:24])[N:3]=1.O.C1(C)C([S:32]([OH:35])(=[O:34])=[O:33])=CC=CC=1>CCO.[Pd]>[S:32]([C:21]1[CH:22]=[CH:23][C:18]([CH3:17])=[CH:19][CH:20]=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]([F:24])[N:3]=1

Participants

Procedure

2,6-Difluoro-3-(1-Cbz-2-(S)-azetidinylmethoxy)pyridine from Example 116b (640 mg, 1.9 mmol) was combined with 10% Pd on C (50 mg) and p toluenesulfonic acid monohydrate (1.1 g, 5.7 mmole) in 30 mL of EtOH, and the mixture was stirred under an H2 atmosphere for 16 hours. The mixture was concentrated, triturated with ether and then recrystallized from ethyl acetate/ether to yield 231 mg (32.4%) of the title compound: mp 140-143° C. 1H NMR (D2O 300 MHz) 6: 2.40 (s, 3H), 2.69 (m, 2H), 4.12 (m, 2H), 4.46 (d, J=4.5, 2H), 4.94 (m, 1H), 7.01 (m, 1H), 7.38 (d,J=8.0, 2H), 7.70 (d,J=8.0, 2H), 7.81 (m, 1H). MS (DCI/NH3) m/e 201 (M+H)+, 218 (M+NH4)+. Anal. calcd. for C9H10F2N2O.C7H8O3S: C, 51.61H, 4.87 N, 7.52 Found: C, 51.37 H, 4.89; N, 7.40. [α]D -1.44 (c 1, MeOH).