Triethylamine → N-(9-methyl-9-azabicyclo[3.3.1]non-3-yl)-2-furan-2-ylbenzoxazole-4-carboxamide

HRID 506307ノート

反応式

HRID 506307 の反応式
[O:1]1[CH:5]=[CH:4][CH:3]=[C:2]1[C:6]1[O:7][C:8]2[C:9](=[C:11]([C:15]([OH:17])=O)[CH:12]=[CH:13][CH:14]=2)[N:10]=1.Cl.Cl.[NH2:20][CH:21]1[CH2:28][CH:27]2[N:29]([CH3:30])[CH:23]([CH2:24][CH2:25][CH2:26]2)[CH2:22]1.Cl.C(N=C=NCCCN(C)C)C.ON1C2C=CC=CC=2N=N1.C(N(CC)CC)C>CN(C=O)C.C(OCC)(=O)C>[CH3:30][N:29]1[CH:23]2[CH2:24][CH2:25][CH2:26][CH:27]1[CH2:28][CH:21]([NH:20][C:15]([C:11]1[CH:12]=[CH:13][CH:14]=[C:8]3[O:7][C:6]([C:2]4[O:1][CH:5]=[CH:4][CH:3]=4)=[N:10][C:9]=13)=[O:17])[CH2:22]2

参加物

8

反応物 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 684568872-Furan-2-ylbenzoxazole-4-carboxylic acid

生成物 1

HCID 11494326N-(9-methyl-9-azabicyclo[3.3.1]non-3-yl)-2-furan-2-ylbenzoxazole-4-carboxamide収率 61%

試薬・触媒・溶媒 2

HCID 6228Dimethylformamide溶媒HCID 8857Ethyl Acetate溶媒

実験手順

A mixture of 2-furan-2-ylbenzoxazole-4-carboxylic acid (51 mg, 0.22 mmol), 3-amino-9-methyl-9-azabicyclo[3.3.1]nonane dihydrochloride (59 mg, 0.26 mmol), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (59 mg, 0.31 mmol) and 1-hydroxybenzotriazole (84 mg, 0.62 mmol) in DMF (5 mL) was stirred for 10 min at room temperature, then triethylamine (0.14 mL, 1.1 mmol) was added. The resulting reaction mixture was stirred at room temperature overnight. The mixture was diluted with ethyl acetate (20 mL), and then washed with a saturated solution of sodium bicarbonate. The aqueous layer was further extracted with ethyl acetate (2×50 mL). The combined organics were dried (Na2SO4), filtered and concentrated. The crude material was purified by column chromatography (silica gel, 90:9:1 ethyl acetate/methanol/concentrated ammonium hydroxide) to afford N-(9-methyl-9-azabicyclo[3.3.1]non-3-yl)-2-furan-2-ylbenzoxazole-4-carboxamide (49 mg, 61%) as an off-white solid: 1H NMR (500 MHz, CDCl3) δ 8.94 (d, J=6.0 Hz, 1H), 8.22 (dd, J=7.5, 1.0 Hz, 1H), 7.74 (d, J=1.5 Hz, 1H), 7.68 (dd, J=8.0, 1.0 Hz, 1H), 7.46 (t, J=4.0 Hz, 1H), 7.35 (d, J=4.0 Hz, 1H), 6.79-6.66 (m, 1H), 4.58-4.53 (m, 1H), 3.12 (d, J=10.0 Hz, 2H), 2.66-2.59 (m, 2H), 2.55 (s, 3H), 2.18-1.98 (m, 3H), 1.68-1.49 (m, 3H), 1.22-1.17 (m, 2H); MS (ESI+) m/z 366 (M+H); HPLC>99% (AUC), tR=12.12 min.

後処理

  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 (2×50 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, 90:9:1 ethyl acetate/methanol/concentrated ammonium hydroxide)

出典と根拠

ORDレコード
ord-a4f5e18c095142bc9db05cf2b2b20777
出典データセット
uspto-grants-2010_08
特許番号
US07781430B2

反応ノート

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