Cl[C:2]1[CH:7]=[CH:6][C:5]([B:8]2[O:12]C(C)(C)C(C)(C)[O:9]2)=[CH:4][N:3]=1.[NH:17]1[CH2:21][CH2:20][CH:19]([OH:22])[CH2:18]1.CCN(C(C)C)C(C)C>CN1C(=O)CCC1>[OH:22][CH:19]1[CH2:20][CH2:21][N:17]([C:2]2[N:3]=[CH:4][C:5]([B:8]([OH:9])[OH:12])=[CH:6][CH:7]=2)[CH2:18]1To a solution of 2-chloro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (239 mg, 1 mmol) in NMP (2 mL) was added pyrrolidin-3-ol (174 mg, 2 mmol) and DIPEA (500 uL, 3 mmol), then the mixture was sealed in a microwave tube and heated in microwave reactor at 180° C. for 1.5 hours. TLC and LC-Ms showed the reaction had completed and the desired compound was detected. The reaction mixture was poured into 30 mL of H2O, and extracted with n-BuOH, washed with water and brine, concentrated and purified on TLC(CH2Cl2:MeOH=10:1) to give a white solid. MS (m/z): 209 (M+H)+
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