1-Methylpiperazine → Urmc-099

HRID 85022Notes

Reaction equation

HRID 85022 reaction equation
[NH:1]1[C:9]2[C:4](=[CH:5][C:6]([C:10]3[C:18]4[C:13](=[N:14][CH:15]=[C:16]([C:19]5[CH:26]=[CH:25][C:22](C=O)=[CH:21][CH:20]=5)[CH:17]=4)[N:12](S(C4C=CC(C)=CC=4)(=O)=O)[CH:11]=3)=[CH:7][CH:8]=2)[CH:3]=[CH:2]1.[CH3:37][N:38]1[CH2:43][CH2:42][NH:41][CH2:40][CH2:39]1.[C:44](O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>C(Cl)Cl>[NH:1]1[C:9]2[C:4](=[CH:5][C:6]([C:10]3[C:18]4[C:13](=[N:14][CH:15]=[C:16]([C:19]5[CH:26]=[CH:25][C:22]([CH2:37][N:38]6[CH2:43][CH2:42][N:41]([CH3:44])[CH2:40][CH2:39]6)=[CH:21][CH:20]=5)[CH:17]=4)[NH:12][CH:11]=3)=[CH:7][CH:8]=2)[CH:3]=[CH:2]1

Participants

5

Reactant 3

HCID 531671-MethylpiperazineHCID 5049666Sodium triacetoxyborohydrideHCID 727114404-(3-(1H-indol-5-yl)-1-tosyl-1H-pyrrolo[2,3-b]pyridin-5-yl)benzaldehyde

Product 1

HCID 54764565Urmc-099

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of 4-(3-(1H-indol-5-yl)-1-tosyl-1H-pyrrolo[2,3-b]pyridin-5-yl)benzaldehyde [Intermediate AJ] (0.11 g, 0.214 mmol) in CH2Cl2 (3 mL) was added 1-methylpiperazine (40 μL, 0.40 mmol) and sodium triacetoxyborohydride (68 mg, 0.32 mmol). The reaction mixture was stirred for 1 hr at room temperature, after which it was partitioned between CH2Cl2 and 1 M NaOH. The organic layer was separated, dried over MgSO4, and concentrated in vacuo. The residue was dissolved in 3:2 MeOH:acetone (5 mL), and 2 M NaOH (1.5 mL) was added. The resulting mixture was stirred at 65° C. for 30 min, after which it was partitioned between EtOAc and 1 M NaOH. The organic layer was separated, dried over MgSO4, filtered, and stripped to provide a residue that was subjected to preparatory HPLC to yield the title compound. HPLC retention time: 1.63 minutes; MS ESI (m/z) 422.4 (M+1)+, calc. 421.

Workup

  1. customafter which it was partitioned between CH2Cl2 and 1 M NaOH
  2. customThe organic layer was separated
  3. dry with materialdried over MgSO4
  4. concentrationconcentrated in vacuo
  5. dissolutionThe residue was dissolved in 3:2 MeOH
  6. additionacetone (5 mL), and 2 M NaOH (1.5 mL) was added
  7. stirringThe resulting mixture was stirred at 65° C. for 30 min
  8. customafter which it was partitioned between EtOAc and 1 M NaOH
  9. customThe organic layer was separated
  10. dry with materialdried over MgSO4
  11. filtrationfiltered
  12. customto provide a residue that

Sources & evidence

ORD record
ord-08b8ad5348714dc592b29672e5da1119
Source dataset
uspto-grants-2014_09
Patent number
US08846909B2

Reaction notes

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