Triethylamine → HCID 68455869, compound

HRID 969913Notes

Reaction equation

HRID 969913 reaction equation
[CH3:1][C:2]1[N:3]=[CH:4][S:5][C:6]=1[C:7]1[O:8][C:9]2[C:10](=[C:12]([C:16]([OH:18])=O)[CH:13]=[CH:14][CH:15]=2)[N:11]=1.[ClH:19].C(N=C=NCCCN(C)C)C.ON1C2C=CC=CC=2N=N1.Cl.Cl.[NH2:43][C@H:44]1[CH:49]2[CH2:50][CH2:51][N:46]([CH2:47][CH2:48]2)[CH2:45]1.C(N(CC)CC)C>CN(C=O)C.C(OCC)(=O)C>[ClH:19].[N:46]12[CH2:51][CH2:50][CH:49]([CH2:48][CH2:47]1)[C@H:44]([NH:43][C:16]([C:12]1[CH:13]=[CH:14][CH:15]=[C:9]3[O:8][C:7]([C:6]4[S:5][CH:4]=[N:3][C:2]=4[CH3:1])=[N:11][C:10]=13)=[O:18])[CH2:45]2

Participants

8

Reactant 5

HCID 8471TriethylamineHCID 757711-HydroxybenzotriazoleHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 12494973(3S)-1-azabicyclo[2.2.2]octan-3-amine dihydrochlorideHCID 68458902HCID 68458902, compound

Product 1

HCID 68455869HCID 68455869, compoundYield 45%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

A mixture of 2-(4-methylthiazol-5-yl)benzoxazole-4-carboxylic acid (80 mg, 0.31 mmol), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (118 mg, 0.62 mmol), 1-hydroxybenzotriazole (84 mg, 0.62 mmol) and (S)-(−)-3-aminoquinuclidine dihydrochloride (73 mg, 0.39 mmol) in DMF (5 mL) was stirred at room temperature for 10 min, then triethylamine (0.18 mL, 4.0 mmol) was added. The resulting reaction mixture was stirred at room temperature overnight. The mixture was diluted with ethyl acetate (50 mL), and then washed with a saturated solution of sodium bicarbonate. The aqueous layer was further extracted with ethyl acetate (2×100 mL). The combined organics were washed with water (2×50 mL) and brine (2×50 mL), dried (Na2SO4), filtered and concentrated. The crude material was purified by column chromatography (silica gel, 90:9:1 dichloromethane/methanol/concentrated ammonium hydroxide) and recrystallization from acetonitrile to afford the desired product (49 mg, 45%) as a yellow solid: 1H NMR (500 MHz, CDCl3) δ 9.28 (d, J=7.3 Hz, 1H), 8.90 (s, 1H), 8.22 (dd, J=7.8, 1.0 Hz, 1H), 7.72 (dd, J=8.1, 1.0 Hz, 1H), 7.49 (t, J=8.0 Hz, 1H), 4.40-4.30 (m, 1H), 3.58-3.53 (m, 1H), 3.10-3.03 (m, 2H), 3.00 (s, 3H), 2.98-2.94 (m, 2H), 2.90-2.78 (m, 1H), 2.20-2.15 (m, 1H), 2.10-2.00 (m, 1H), 1.85-1.76 (m, 2H), 1.66-1.63 (m, 1H); MS (ESI+) m/z 369 (M+H).

Workup

  1. customThe resulting reaction mixture
  2. stirringwas stirred at room temperature overnight
  3. washwashed with a saturated solution of sodium bicarbonate
  4. extractionThe aqueous layer was further extracted with ethyl acetate (2×100 mL)
  5. washThe combined organics were washed with water (2×50 mL) and brine (2×50 mL)
  6. dry with materialdried (Na2SO4)
  7. filtrationfiltered
  8. concentrationconcentrated
  9. customThe crude material was purified by column chromatography (silica gel, 90:9:1 dichloromethane/methanol/concentrated ammonium hydroxide) and recrystallization from acetonitrile

Sources & evidence

ORD record
ord-2efc0a159e3448bd81de7753f43e59b3
Source dataset
uspto-grants-2007_12
Patent number
US07307094B2

Reaction notes

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