Trimethyl orthoformate → HCID 66937371, 화합물

HRID 1521373노트

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HRID 1521373 반응식
[Cl:1][C:2]1[C:3]([O:12][C:13]2[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=2)=[CH:4][C:5]([N+:9]([O-])=O)=[C:6]([NH2:8])[CH:7]=1.[CH3:19]OC(OC)OC.S(S([O-])=O)([O-])=O.[Na+].[Na+].C(=O)(O)[O-].[Na+]>CN(C=O)C.C(O)(=O)C>[Cl:1][C:2]1[C:3]([O:12][C:13]2[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=2)=[CH:4][C:5]2[N:9]=[CH:19][NH:8][C:6]=2[CH:7]=1

참가 물질

7

반응물 4

HCID 9005Trimethyl orthoformateHCID 24489Sodium Dithionite2회HCID 516892Sodium BicarbonateHCID 669372525-Chloro-2-nitro-4-phenoxyphenylamine

생성물 1

HCID 66937371HCID 66937371, 화합물수율 76%

시약·촉매·용매 2

HCID 176Acetic Acid용매2회HCID 6228Dimethylformamide용매

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온도
100 °C

실험 절차

To a solution of 5-chloro-2-nitro-4-phenoxyphenylamine (0.810 g, 3.06 mmol) in DMF (12 mL) was added trimethylorthoformate (12 mL) followed by sodium dithionite (2.66 g, 15.3 mmol), and glacial acetic acid (1.5 mL). The reaction mixture was heated in a sealed tube at 100° C. for 14 h. Additional sodium dithionite (0.5 g) and acetic acid (1 mL) were added and heating was continued at 120° C. for an additional 3 h. The reaction flask was cooled in ice, added cautiously to half-saturated sodium bicarbonate solution (300 mL) and extracted with EtOAc. Combined organic layers were washed with 5% NaHCO3, brine, dried, filtered, and concentrated under reduced pressure. The residue was purified (FCC) (hexanes:EtOAc, 0% to 5% over 20 minutes) to yield the titled compound as a yellow amorphous solid (0.57 g, 76%) as a mixture of tautomers. MS (ESI/CI): mass calcd. for C13H9ClN2O, 244; m/z found, 245 [M+H]+. 1H NMR (500 MHz, CDCl3): 9.55 (s, 1H), 8.06 (s, 1H), 8.0-7.2 (m, 2H), 7.32 (t, J=7.9 Hz, 2H), 7.09 (t, J=7.3 Hz, 1H), 6.96 (d, J=8.3 Hz, 2H).

후처리

  1. temperatureheating
  2. temperatureThe reaction flask was cooled in ice
  3. extractionextracted with EtOAc
  4. washCombined organic layers were washed with 5% NaHCO3, brine
  5. customdried
  6. filtrationfiltered
  7. concentrationconcentrated under reduced pressure
  8. customThe residue was purified (FCC) (hexanes:EtOAc, 0% to 5% over 20 minutes)

출처 및 근거

ORD 기록
ord-08a23f68ea0b4f34858ebcabafda6427
출처 데이터셋
uspto-grants-2015_07
특허 번호
US09073923B2

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