Tert-Butylamine → N-tert-butyl-5-iodo-4-(2-(thiophen-3-yl)ethoxy)pyridin-2-amine

HRID 1949859노트

반응식

HRID 1949859 반응식
C1(C)C=CC(S(OS(C2C=CC(C)=CC=2)(=O)=O)(=O)=O)=CC=1.[I:22][C:23]1[CH:24]=[N+:25]([O-])[CH:26]=[CH:27][C:28]=1[O:29][CH2:30][CH2:31][C:32]1[CH:36]=[CH:35][S:34][CH:33]=1.[C:38]([NH2:42])([CH3:41])([CH3:40])[CH3:39]>C(Cl)(Cl)Cl>[C:38]([NH:42][C:26]1[CH:27]=[C:28]([O:29][CH2:30][CH2:31][C:32]2[CH:36]=[CH:35][S:34][CH:33]=2)[C:23]([I:22])=[CH:24][N:25]=1)([CH3:41])([CH3:40])[CH3:39]

참가 물질

5

반응물 3

HCID 6385Tert-Butylamine2회HCID 77773Toluene-p-sulphonic anhydride2회HCID 582840413-Iodo-4-(2-(thiophen-3-yl)ethoxy)pyridine 1-oxide

생성물 1

HCID 57900152N-tert-butyl-5-iodo-4-(2-(thiophen-3-yl)ethoxy)pyridin-2-amine

시약·촉매·용매 1

HCID 6212Chloroform용매2회

실험 절차

A solution of p-toluenesulfonic anhydride (1.47 g, 4.49 mmol) in 15 ml of chloroform was added dropwise to a stirred mixture of 0.78 g (2.25 mmol) of 3-iodo-4-(2-(thiophen-3-yl)ethoxy)pyridine 1-oxide and 1.18 ml (11.2 mmol) of tert-butylamine in 15 ml of chloroform at 0° C. After 30 minutes, the addition of the same quantities of p-toluenesulfonic anhydride and tert-butylamine was repeated to complete the reaction. The reaction mixture was concentrated and partitioned between 100 ml of diethylether and 1 M aqueous sodium carbonate. The aqueous layer was extracted with 50 ml of diethylether again and combined organic extracts were washed with water, brine, dried over sodium sulfate and concentrated in vacuum. The residue was purified by flash chromatography eluting with 10% of ethyl acetate in hexane to give N-tert-butyl-5-iodo-4-(2-(thiophen-3-yl)ethoxy)pyridin-2-amine (0.473 g (52%). 1H NMR (400 MHz, CDCl3) δ 8.15 (s, 1H), 7.28 (dd, J=3.0, 4.8, 1H), 7.18 (s, 1H), 7.12 (d, J=4.9, 1H), 5.85 (s, 1H), 4.44 (s, 1H), 4.15 (t, J=6.5, 2H), 3.18 (t, J=6.5, 2H), 1.39 (s, 9H). MS: (ESI+) 403.2

후처리

  1. customthe reaction
  2. concentrationThe reaction mixture was concentrated
  3. custompartitioned between 100 ml of diethylether and 1 M aqueous sodium carbonate
  4. extractionThe aqueous layer was extracted with 50 ml of diethylether again
  5. washwere washed with water, brine
  6. dry with materialdried over sodium sulfate
  7. concentrationconcentrated in vacuum
  8. customThe residue was purified by flash chromatography
  9. washeluting with 10% of ethyl acetate in hexane

출처 및 근거

ORD 기록
ord-4696e25d08164472aaf0041dbba8e301
출처 데이터셋
uspto-grants-2013_03
특허 번호
US08399690B2

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