Triethylamine → HCID 87174903, compound

HRID 2102440Notes

Reaction equation

HRID 2102440 reaction equation
[OH:1][CH2:2][C@@H:3]1[CH2:8][N:7]2[CH2:9][CH2:10][CH2:11][C@H:6]2[C:5](=[O:12])[N:4]1[CH3:13].C(N(CC)CC)C.[CH3:21][S:22](Cl)(=[O:24])=[O:23]>ClCCl>[CH3:21][S:22]([O:1][CH2:2][C@@H:3]1[CH2:8][N:7]2[CH2:9][CH2:10][CH2:11][C@H:6]2[C:5](=[O:12])[N:4]1[CH3:13])(=[O:24])=[O:23]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 31297Methanesulfonyl chlorideHCID 45099890HCID 45099890, compound

Product 1

HCID 87174903HCID 87174903, compoundYield 75%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

(3S,8aS)-3-(Hydroxymethyl)-2-methylhexahydropyrrolo[1,2-α]pyrazin-1(2H)-one (505 mg, 2.74 mmol) was dissolved in dichloromethane (10 mL) and triethylamine (0.8 mL, 5.75 mmol) was added at 0° C. followed by dropwise addition of methanesulfonyl chloride (0.45 mL, 5.81 mmol). The solution was warmed to room temperature and stirred for 1.25 h and then was concentrated in vacuo. The residue was partitioned between ethyl acetate and saturated sodium bicarbonate solution. The aqueous portion was extracted with ethyl acetate. The combined organic portion was washed with brine, dried over sodium sulfate, filtered and concentrated in vacuo to afford [(3S,8aS)-2-methyl-1-oxooctahydropyrrolo[1,2-α]pyrazin-3-yl]methyl methanesulfonate as an orange oil (538 mg, 2.05 mmol, 75% yield). 4-[(3,4-Dichloro-2-fluorophenyl)amino]-6-(methyloxy)quinazolin-7-ol hydrochloride (469 mg, 1.20 mmol) was dissolved in dimethylformamide (1 mL) and potassium carbonate (828 mg, 6.00 mmol) was added followed by [(3S,8aS)-2-methyl-1-oxooctahydropyrrolo[1,2-α]pyrazin-3-yl]methyl methanesulfonate (538 mg, 2.05 mmol) in dimethylformamide (1 mL). The mixture was stirred at 70° C. for 34 h and then was concentrated in vacuo. The residue was partitioned between ethyl acetate and water. The aqueous portion was extracted with ethyl acetate. The combined organic portion was dried over sodium sulfate, filtered and concentrated in vacuo to afford a brown oil which was purified by column chromatography (6-8% methanol in dichloromethane) to afford a yellow foam (300 mg, 0.577 mmol, 48% yield). The yellow foam (100 mg) was purified further by column chromatography (ethyl acetate-ethanol 1:1) to afford (3S,8aS)-3-({[4-[(3,4-dichloro-2-fluorophenyl)amino]-6-(methyloxy)quinazolin-7-yl]oxy}methyl)-2-methylhexahydropyrrolo[1,2-α]pyrazin-1(2H)-one as a yellow solid (60 mg). 1H NMR (400 MHz, CDCl3): 8.71 (s, 1H), 8.52 (dd, 1H), 7.36-7.32 (m, 2H), 7.01 (s, 1H), 4.49 (dd, 1H), 4.34 (dd, 1H), 4.03 (s, 3H), 3.90-3.84 (m, 1H), 3.47 (t, 1H), 3.13 (s, 3H), 3.05 (dd, 1H), 2.95 (dd, 1H), 2.93-2.83 (m, 2H), 2.29-2.19 (m, 1H), 2.03-1.84 (m, 2H), 1.83-1.70 (m, 1H); MS (EI) for C24H24N5O3FCl2: 520 (MH+).

Workup

  1. concentrationwas concentrated in vacuo
  2. customThe residue was partitioned between ethyl acetate and saturated sodium bicarbonate solution
  3. extractionThe aqueous portion was extracted with ethyl acetate
  4. washThe combined organic portion was washed with brine
  5. dry with materialdried over sodium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-a4796b9ecb3640ed9632116bf215ab29
Source dataset
uspto-grants-2009_08
Patent number
US07576074B2

Reaction notes

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