(Pyrimidin-5-yl)boronic acid → 6-(pyrimidin-5-yl)-3-(4-piperidin-1-ylmethylphenyl)-9H-dipyrido[2,3-b;4',3'-d]pyrrole

Temperature

130 °C

A mixture of 6-chloro-3-(4-piperidin-1-ylmethylphenyl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole (40 mg, 0.08 mmol), pyrimidin-5-yl boronic acid (20 mg, 0.16 mmol), 1,1′-[bis(diphenylphosphino)ferrocene]dichloropalladium(II) (3.2 mg, 0.004 mmol) in saturated aqueous sodium carbonate solution (0.15 mL) and acetonitrile (1.50 mL) was heated under microwave irradiation at 130° C. for 30 minutes. The cooled reaction mixture was diluted with DCM (20 mL) and methanol (2 mL) and washed with water (15 mL). The organic phase was separated, dried over sodium sulfate, filtered and evaporated in vacuo to afford a residue that was purified by preparative HPLC [0-30% MeCN in water (0.1% formic acid) over 30 min, 35 mL/min] to afford the title compound as a yellow/orange solid (10 mg, 23%). 1H NMR (DMSO-D6, 400 MHz): 12.44 (s, 1H), 9.52 (s, 2H), 9.21 (s, 1H), 9.08 (d, J=1.7 Hz, 2H), 9.02 (d, J=2.2 Hz, 1H), 8.96 (d, J=2.2 Hz, 1H), 7.77 (d, J=8.2 Hz, 2H), 7.46 (d, J=8.1 Hz, 2H), 3.50 (s, 2H), 2.37 (s, 4H), 1.53 (m, 4H), 1.41 (m, 2H). LCMS (Method D): RT=6.84 min, M+H+=421.

1. customThe cooled reaction mixture
2. washwashed with water (15 mL)
3. customThe organic phase was separated
4. dry with materialdried over sodium sulfate
5. filtrationfiltered
6. customevaporated in vacuo
7. customto afford a residue that
8. customwas purified by preparative HPLC [0-30% MeCN in water (0.1% formic acid) over 30 min, 35 mL/min]

ORD record

ord-1cf2985798a94db09c51f843203e8df9

Source dataset

uspto-grants-2015_12

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US09216980B2