Acetic Acid → (2,3-Dihydro-benzo[1,4]dioxin-6-ylmethyl)-{2-[2-(2-imidazol-1-yl-6-methyl-pyrimidin-4-yl)-pyrrolidin-1-yl]-ethyl}-methyl-amine

HRID 1170521Notes

Reaction equation

HRID 1170521 reaction equation
[O:1]1[C:6]2[CH:7]=[CH:8][C:9]([CH2:11][NH:12][CH2:13][CH2:14][N:15]3[CH2:19][CH2:18][CH2:17][CH:16]3[C:20]3[CH:25]=[C:24]([CH3:26])[N:23]=[C:22]([N:27]4[CH:31]=[CH:30][N:29]=[CH:28]4)[N:21]=3)=[CH:10][C:5]=2[O:4][CH2:3][CH2:2]1.C=O.[C:34](O)(=O)C.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>CO>[O:1]1[C:6]2[CH:7]=[CH:8][C:9]([CH2:11][N:12]([CH2:13][CH2:14][N:15]3[CH2:19][CH2:18][CH2:17][CH:16]3[C:20]3[CH:25]=[C:24]([CH3:26])[N:23]=[C:22]([N:27]4[CH:31]=[CH:30][N:29]=[CH:28]4)[N:21]=3)[CH3:34])=[CH:10][C:5]=2[O:4][CH2:3][CH2:2]1

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 712FormaldehydeHCID 5049666Sodium triacetoxyborohydrideHCID 59551907(2,3-Dihydro-benzo[1,4]dioxin-6-ylmethyl)-{2-[2-(2-imidazol-1-yl-6-methyl-pyrimidin-4-yl)-pyrrolidin-1-yl]-ethyl}-amine

Product 1

HCID 11633463(2,3-Dihydro-benzo[1,4]dioxin-6-ylmethyl)-{2-[2-(2-imidazol-1-yl-6-methyl-pyrimidin-4-yl)-pyrrolidin-1-yl]-ethyl}-methyl-amineYield 89%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

A solution of (2,3-dihydro-benzo[1,4]dioxin-6-ylmethyl)-{2-[2-(2-imidazol-1-yl-6-methyl-pyrimidin-4-yl)-pyrrolidin-1-yl]-ethyl}-amine (65 mg, 156 μmol), formalin (63 μL, 780 μmol), and acetic acid (170 μL, 2.83 mmol) in MeOH (1 mL) was stirred at r.t. for 5 min. Sodium triacetoxyborohydride (99 mg, 470 μmol) was then added. The reaction mixture was stirred at r.t. for 20 min and then concentrated to residue. EtOAc (5 mL) and 1N NaOH (5 mL) were added. The organic layer was isolated, dried (MgSO4), filtered, and concentrated. Silica gel chromatography (0% to 10% MeOH/DCM) afforded 60 mg (89%) of (2,3-dihydro-benzo[1,4]dioxin-6-ylmethyl)-{2-[2-(2-imidazol-1-yl-6-methyl-pyrimidin-4-yl)-pyrrolidin-1-yl]-ethyl}-methyl-amine. [M+H]+ 435.32; 1H NMR (400 MHz, CDCl3) δ 8.61 (s, 1H), 7.88 (s, 1H), 7.33 (s, 1H), 7.12 (s, 1H), 6.65-6.79 (m, 3H), 4.21 (s, 4H), 3.54 (t, 1H), 3.24-3.42 (m, 3H), 2.76 (m, 1H), 2.11-2.55 (m, 8H), 2.15 (s, 3H), 1.84 (m, 2H), 1.70 (m, 1H).

Workup

  1. concentrationconcentrated to residue
  2. additionEtOAc (5 mL) and 1N NaOH (5 mL) were added
  3. customThe organic layer was isolated
  4. dry with materialdried (MgSO4)
  5. filtrationfiltered
  6. concentrationconcentrated

Sources & evidence

ORD record
ord-89b806eebdf44bcaa40320dadd9333a1
Source dataset
uspto-grants-2010_11
Patent number
US07825256B2

Reaction notes

Loading…