Dimethylformamide → HCID 68999410, compound

HRID 749960Notes

Reaction equation

HRID 749960 reaction equation
[CH2:1]([C:8]1[CH:20]=[CH:19][C:11]([O:12][CH2:13][C@@H:14]2[CH2:18][CH2:17][CH2:16][NH:15]2)=[CH:10][CH:9]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.CN(C=O)C.Br[CH2:27][CH2:28][C:29]([O:31][CH3:32])=[O:30].C(=O)([O-])[O-].[K+].[K+]>O>[CH3:32][O:31][C:29](=[O:30])[CH2:28][CH2:27][N:15]1[CH2:16][CH2:17][CH2:18][C@H:14]1[CH2:13][O:12][C:11]1[CH:19]=[CH:20][C:8]([CH2:1][C:2]2[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=2)=[CH:9][CH:10]=1

Participants

6

Reactant 4

HCID 6228DimethylformamideHCID 11430Potassium CarbonateHCID 76934Methyl 3-bromopropanoateHCID 16222641HCID 16222641, compound

Product 1

HCID 68999410HCID 68999410, compoundYield 14%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
60 °C

Procedure

(S)-2-(4-Benzyl-phenoxymethyl)-pyrrolidine (200 mg, 0.658 mmol) was taken into DMF (2 mL), and methyl 3-bromopropionate (121 mg, 0.724 mmol) was added, followed by potassium carbonate (182 mg, 1.317 mmol). The mixture was heated to 60° C. and left to react overnight. The mixture was diluted with water, and extracted with ethyl acetate (3×). The combined ethyl acetate layers were washed with brine, dried over anhydrous sodium sulfate, and concentrated to dryness. The compound was then purified by flash chromatography (eluted with 1% methanol in dichloromethane with a 30:1 silica ratio) to obtain the title product (32.6 mg, 0.092 mmol, 14% yield); LCMS; m/z 353.47. found 354.3 (M+1). 1H NMR (400 MHz, CDCL3) δ 3.92 (s, 1H), 1.59 (s, 2H), 1.76-1.78 (m, 1H), 1.93-2.00 (m, 1H), 2.28-2.30 (m, 1H), 2.52-2.55 (m, 2H), 2.67-2.74 (m, 1H), 2.84-2.91 (m, 1H), 3.11-3.15 (m, 1H), 3.20-3.27 (m, 1H), 3.66 (s, 3H), 3.73-3.77 (m, 1H), 3.91-3.92 (m, 2H), 6.81-6.84 (m, 2H), 7.07-7.09 (m, 2H), 7.16-7.29 (m, 5H).

Workup

  1. additionwas added
  2. waitleft
  3. customto react overnight
  4. extractionextracted with ethyl acetate (3×)
  5. washThe combined ethyl acetate layers were washed with brine
  6. dry with materialdried over anhydrous sodium sulfate
  7. concentrationconcentrated to dryness
  8. customThe compound was then purified by flash chromatography (
  9. washeluted with 1% methanol in dichloromethane with a 30:1 silica ratio)

Sources & evidence

ORD record
ord-093d0633d6684e108e868a0324cac9f6
Source dataset
uspto-grants-2008_07
Patent number
US07402684B2

Reaction notes

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