Dipropylamine → Methyl 3-[(dipropylamino)carbonyl]-5-nitrobenzoate

HRID 13998

반응식

HRID 13998 반응식
C(C1NC=CN=1)(C1NC=CN=1)=O.[N+:13]([C:16]1[CH:17]=[C:18]([C:26]([O-:28])=O)[CH:19]=[C:20]([CH:25]=1)[C:21]([O:23][CH3:24])=[O:22])([O-:15])=[O:14].[CH2:29]([NH:32][CH2:33][CH2:34][CH3:35])[CH2:30][CH3:31]>C1COCC1>[CH2:29]([N:32]([CH2:33][CH2:34][CH3:35])[C:26]([C:18]1[CH:19]=[C:20]([CH:25]=[C:16]([N+:13]([O-:15])=[O:14])[CH:17]=1)[C:21]([O:23][CH3:24])=[O:22])=[O:28])[CH2:30][CH3:31]

참가 물질

5

반응물 3

HCID 8902DipropylamineHCID 5250894Bis-(1H-imidazol-2-YL)-methanoneHCID 6931682Monomethyl-5-nitroisophthalate

생성물 1

HCID 690570Methyl 3-[(dipropylamino)carbonyl]-5-nitrobenzoate

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매

실험 절차

Carbonyl diimidazole (3.90 g, 24.0 mmol) is added to a mixture of mono-methyl 5-nitro-isophthalate (XXVIII, 4.50 g, 20.0 mmol) in dry THF (50 mL). The mixture is stirred for 0.5 hours. Dipropylamine (3.28 mL, 24.0 mmol) is added slowly to the mixture. The reaction mixture is then stirred for 4 hours. The solvent is removed under reduced pressure and the mixture is partitioned between ethyl acetate and water. The organic phase is separated and washed with saline, dried over anhydrous sodium sulfate, filtered, and concentrated. Column chromatography (silica gel; ethyl acetate/hexanes, 15/85) gives the title compound, NMR (300 MHz, CDCl3) delta 8.88, 8.41, 8.35, 4.00, 3.48, 3.15, 1.72, 1.57, 1.00 and 0.77; MS (ESI+) for C15H20N2O5 m/z (M+H)+=309.2.

후처리

  1. stirringThe reaction mixture is then stirred for 4 hours
  2. customThe solvent is removed under reduced pressure
  3. customthe mixture is partitioned between ethyl acetate and water
  4. customThe organic phase is separated
  5. washwashed with saline
  6. dry with materialdried over anhydrous sodium sulfate
  7. filtrationfiltered
  8. concentrationconcentrated

출처 및 근거

ORD 기록
ord-8a9ee427b1b346a0bfc540401dbd6c0f
출처 데이터셋
uspto-grants-2010_06
특허 번호
US07727997B2

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