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

HRID 1888614Notes

Reaction equation

HRID 1888614 reaction equation
Cl[C:2]1[N:10]=[CH:9][C:8]2[NH:7][C:6]3[N:11]=[CH:12][C:13]([C:15]4[CH:20]=[CH:19][C:18]([CH2:21][N:22]5[CH2:27][CH2:26][CH2:25][CH2:24][CH2:23]5)=[CH:17][CH:16]=4)=[CH:14][C:5]=3[C:4]=2[CH:3]=1.[N:28]1[CH:33]=[C:32](B(O)O)[CH:31]=[N:30][CH:29]=1>C(=O)([O-])[O-].[Na+].[Na+].C(#N)C.C(Cl)Cl.CO>[N:28]1[CH:33]=[C:32]([C:2]2[N:10]=[CH:9][C:8]3[NH:7][C:6]4[N:11]=[CH:12][C:13]([C:15]5[CH:16]=[CH:17][C:18]([CH2:21][N:22]6[CH2:23][CH2:24][CH2:25][CH2:26][CH2:27]6)=[CH:19][CH:20]=5)=[CH:14][C:5]=4[C:4]=3[CH:3]=2)[CH:31]=[N:30][CH:29]=1

Participants

7

Reactant 2

HCID 2795193(Pyrimidin-5-yl)boronic acidHCID 582667236-Chloro-3-(4-piperidin-1-ylmethyl-phenyl)-9H-dipyrido[2,3-b;4',3'-d]pyrrole

Product 1

HCID 582667186-(pyrimidin-5-yl)-3-(4-piperidin-1-ylmethylphenyl)-9H-dipyrido[2,3-b;4',3'-d]pyrroleYield 29.7%

Reagents, catalysts & solvents 4

HCID 887MethanolSolventHCID 6342AcetonitrileSolventHCID 6344DichloromethaneSolventHCID 10340Sodium CarbonateSolvent

Conditions

Temperature
130 °C

Procedure

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.

Workup

  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]

Sources & evidence

ORD record
ord-637738dfbe8847a4be79420c019a72df
Source dataset
uspto-grants-2013_08
Patent number
US08501765B2

Reaction notes

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