Triethylamine → HCID 11691012, compound

HRID 969887Notes

Reaction equation

HRID 969887 reaction equation
[Br:1][C:2]1[C:16]([C:17]([OH:19])=O)=[C:6]2[N:7]=[C:8]([C:10]3[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=3)[O:9][C:5]2=[CH:4][CH:3]=1.Cl.Cl.[NH2:22][CH:23]1[CH2:30][CH:29]2[N:31]([CH3:32])[CH:25]([CH2:26][CH2:27][CH2:28]2)[CH2:24]1.Cl.C(N=C=NCCCN(C)C)C.ON1C2C=CC=CC=2N=N1.C(N(CC)CC)C>CN(C=O)C.ClCCl>[CH3:32][N:31]1[CH:25]2[CH2:26][CH2:27][CH2:28][CH:29]1[CH2:30][CH:23]([NH:22][C:17]([C:16]1[C:2]([Br:1])=[CH:3][CH:4]=[C:5]3[O:9][C:8]([C:10]4[CH:11]=[CH:12][CH:13]=[CH:14][CH:15]=4)=[N:7][C:6]=13)=[O:19])[CH2:24]2

Participants

8

Reactant 5

HCID 8471TriethylamineHCID 757711-HydroxybenzotriazoleHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 189569979-Methyl-9-azabicyclo[3.3.1]nonan-3-amine;dihydrochlorideHCID 68458203HCID 68458203, compound

Product 1

HCID 11691012HCID 11691012, compoundYield 12.2%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 6344DichloromethaneSolvent

Procedure

A mixture of 5-bromo-2-phenylbenzo[d]oxazole-4-carboxylic acid (180 mg, 0.56 mmol), 3-amino-9-methyl-9-azabicyclo[3.3.1]nonane dihydrochloride (152 mg, 0.67 mmol), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (215 mg, 1.12 mmol) and 1-hydroxybenzotriazole (151 mg, 1.12 mmol) in DMF (2.5 mL) was stirred for 5 min at room temperature, then triethylamine (0.31 mL, 2.24 mmol) was added. The resulting reaction mixture was stirred at room temperature for 12 h. The mixture was diluted with dichloromethane (20 mL), then washed with a saturated solution of sodium bicarbonate (10 mL). The aqueous layer was further extracted with dichloromethane (3×15 mL). The combined organics were dried (Na2SO4), filtered and concentrated. The crude material was purified by column chromatography (silica gel, 89:10:1 dichloromethane/methanol/concentrated ammonium hydroxide) to afford N-(9-methyl-9-azabicyclo[3.3.1]non-3-yl)-5-bromo-2-phenylbenzoxazole-4-carboxamide (31 mg, 12%) as a white solid: 1H NMR (500 MHz, CDCl3) δ 8.25-8.23 (m, 2H), 7.62 (d, J=8.5 Hz, 1H), 7.60-7.53 (m, 3H), 7.48 (d, J=8.5 Hz, 1H), 7.12 (br s, 1H), 4.69-4.63 (m, 1H), 3.13 (d, J=10.0 Hz, 2H), 2.67 (td, J=12.5, 7.0 Hz, 2H), 2.54 (s, 3H), 2.05-1.93 (m, 3H), 1.60-1.52 (m, 1H), 1.43 (t, J=11.0 Hz, 2H), 1.15-1.10 (m, 2H); MS (ESI+) m/z 454 (M+H); HPLC 98.4% (AUC), tR=11.89 min.

Workup

  1. customThe resulting reaction mixture
  2. stirringwas stirred at room temperature for 12 h
  3. washwashed with a saturated solution of sodium bicarbonate (10 mL)
  4. extractionThe aqueous layer was further extracted with dichloromethane (3×15 mL)
  5. dry with materialThe combined organics were dried (Na2SO4)
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customThe crude material was purified by column chromatography (silica gel, 89:10:1 dichloromethane/methanol/concentrated ammonium hydroxide)

Sources & evidence

ORD record
ord-14f5f63326404f1da36c181017196eca
Source dataset
uspto-grants-2007_12
Patent number
US07307094B2

Reaction notes

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