Triethylamine → 3-Amino-2-(4-chloro-phenylethynyl)-benzoic acid methyl ester

HRID 2298938

반응식

HRID 2298938 반응식
[CH3:1][O:2][C:3](=[O:14])[C:4]1[CH:9]=[CH:8][CH:7]=[C:6]([N+:10]([O-])=O)[C:5]=1I.[Cl:15][C:16]1[CH:21]=[CH:20][C:19]([C:22]#[CH:23])=[CH:18][CH:17]=1.C(N(CC)CC)C>C1(C)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.[Pd].[Cu]I>[CH3:1][O:2][C:3](=[O:14])[C:4]1[CH:9]=[CH:8][CH:7]=[C:6]([NH2:10])[C:5]=1[C:23]#[C:22][C:19]1[CH:20]=[CH:21][C:16]([Cl:15])=[CH:17][CH:18]=1

참가 물질

7

반응물 3

HCID 8471TriethylamineHCID 70118Benzene, 1-chloro-4-ethynyl-HCID 264093Methyl 2-iodo-3-nitrobenzoate

생성물 1

HCID 183400043-Amino-2-(4-chloro-phenylethynyl)-benzoic acid methyl ester

시약·촉매·용매 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)촉매HCID 11979704Tetrakis(triphenylphosphine)palladium촉매HCID 1140Toluene용매

반응 조건

온도
80 °C

실험 절차

2-iodo-3-nitro-benzoic acid methyl ester (0.79 g, 2.84 mmol), 1-chloro-4-ethynylbenzene (0.41 g, 2.99 mmol), palladium tetrakis(triphenylphosphine) (0.16 g, 0.14 mmol), copper (I) iodide (0.03 g, 0.14 mmol), and triethylamine (1.44 g, 14.19 mmol) were dissolved in 15 mL toluene. Argon was bubbled through the resulting solution for 15 min. The reaction was stirred under argon at 80° C. for 2 h and 20 min. The reaction mixture was then washed once with water, dried (MgSO4), and concentrated in vacuo. The orange oil was purified by flash chromatography eluting with 50 to 100% CHCl3/hexanes to yield 3-amino-2-(4-chloro-phenylethynyl)-benzoic acid methyl ester, 0.76 g (94%) as a yellow oil. 1H NMR (300 MHz, d6-DMSO) 3.84 (s,3H), 5.84 (br s, 2H), 6.97 (dd, J=8.1, 1.3 Hz, 1H), 7.05 (dd, J=7.5, 1.2 Hz, 1H), 7.17 (app t, J=7.5 Hz, 1H), 7.49 (d, J=8.7 Hz, 2H), 7.63 (d, J=8.7 Hz, 2H). MS (electrospray, MH+) 286.

후처리

  1. customArgon was bubbled through the resulting solution for 15 min
  2. washThe reaction mixture was then washed once with water
  3. dry with materialdried (MgSO4)
  4. concentrationconcentrated in vacuo
  5. customThe orange oil was purified by flash chromatography
  6. washeluting with 50 to 100% CHCl3/hexanes

출처 및 근거

ORD 기록
ord-251d82ecfdb5474383d4ceee39789f9e
출처 데이터셋
uspto-grants-2002_12
특허 번호
US06495541B1

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