[Cl:1][C:2]1[CH:7]=[C:6](F)[CH:5]=[CH:4][N:3]=1.Cl.[F:10][C:11]1[CH:21]=[CH:20][C:14]([O:15][CH:16]2[CH2:19][NH:18][CH2:17]2)=[CH:13][CH:12]=1.C(N(C(C)C)C(C)C)C>CC(O)C>[Cl:1][C:2]1[CH:7]=[C:6]([N:18]2[CH2:19][CH:16]([O:15][C:14]3[CH:13]=[CH:12][C:11]([F:10])=[CH:21][CH:20]=3)[CH2:17]2)[CH:5]=[CH:4][N:3]=1To 2-chloro-4-fluoropyridine (160.0 mg, 1.216 mmol) and 3-(4-fluoro-phenoxy)-azetidine hydrochloride (248 mg, 1.216 mmol) in 2-propanol (3.0 mL) in a disposable sealed tube at RT was added N-ethyl-N-isopropylpropan-2-amine (0.530 mL, 3.04 mmol). The resulting reaction mixture was heated at 84° C. for 18 h, cooled to RT, concentrated, purified using MPLC (5 g cartridge, 12 g column, 0 to 60% EtOAc-hexanes) giving 2-chloro-4-(3-(4-fluorophenoxy)azetidin-1-yl)pyridine (306.1 mg).
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