Triethylamine → Ethyl 6-trimethylsilylethynyl-1,2-dihydro-2-(trifluoromethyl)-3-quinolinecarboxylate

HRID 1421618

반응식

HRID 1421618 반응식
I[C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[NH:8][CH:7]([C:12]([F:15])([F:14])[F:13])[C:6]([C:16]([O:18][CH2:19][CH3:20])=[O:17])=[CH:5]2.[CH3:21][Si:22]([C:25]#[CH:26])([CH3:24])[CH3:23].C(N(CC)CC)C.C(OCC)(=O)C>C(#N)C.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.[Cu]I>[CH3:21][Si:22]([C:25]#[C:26][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[NH:8][CH:7]([C:12]([F:15])([F:14])[F:13])[C:6]([C:16]([O:18][CH2:19][CH3:20])=[O:17])=[CH:5]2)([CH3:24])[CH3:23]

참가 물질

8

반응물 4

HCID 8471TriethylamineHCID 8857Ethyl AcetateHCID 66111TrimethylsilylacetyleneHCID 21883508Ethyl 6-iodo-1,2-dihydro-2-(trifluoromethyl)-3-quinolinecarboxylate

생성물 1

HCID 21883639Ethyl 6-trimethylsilylethynyl-1,2-dihydro-2-(trifluoromethyl)-3-quinolinecarboxylate수율 38.4%

시약·촉매·용매 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)촉매HCID 178418476HCID 178418476, 화합물촉매HCID 6342Acetonitrile용매

실험 절차

The ethyl 6-iodo-1,2-dihydro-2-(trifluoromethyl)-3-quinolinecarboxylate (Example 160, Step 1)(750 mg, 1.89 mmol), trimethylsilylacetylene (925 mg, 9.44 mmol), dichlorobis(triphenylphosphine)palladium(II) (35 mg, 0.05 mmol), copper(I)iodide (9.5 mg, 0.05 mmol), and triethylamine (953 mg, 9.44 mmol) were mixed at room temperature for 2 h in acetonitrile (10 mL). The resulting black heterogeneous mixture was poured into ethyl acetate (50 mL) and extracted with water (2×25 mL), 1 N aqueous hydrochloric acid (25 mL), and saturated aqueous ammonium chloride (2×25 mL). The organic layer was dried over sodium sulfate and solvent removed at reduce pressure. The product was purified by flash chromatography (0-25% ethyl acetate/hexanes, silica gel). A black semisolid was isolated which upon trituration with hexanes afforded ethyl 6-trimethylsilylethynyl-1,2-dihydro-2-(trifluoromethyl)-3-quinolinecarboxylate as a yellow solid (267 mg,38%): mp 117-119° C. 1H NMR (CDCl3, 300 MHz) 7.65 (s, 1H), 7.24-7.32 (m, 2H), 6.55 (d, 1H, J=8.0 Hz), 5.08-5.18 (m, 1H), 4.66 (brs, 1H), 4.24-4.64 (m, 2H), 1.34 (t, 3H, J=7.1 Hz) 0.22 (s, 9H). ESHRMS m/z 368.1306 (Calc'd for M+H 368.1293).

후처리

  1. extractionextracted with water (2×25 mL), 1 N aqueous hydrochloric acid (25 mL), and saturated aqueous ammonium chloride (2×25 mL)
  2. dry with materialThe organic layer was dried over sodium sulfate and solvent
  3. customremoved
  4. customThe product was purified by flash chromatography (0-25% ethyl acetate/hexanes, silica gel)
  5. customA black semisolid was isolated which upon trituration with hexanes

출처 및 근거

ORD 기록
ord-0e0eb1da936144b1983c8977b7ea9618
출처 데이터셋
uspto-grants-2000_06
특허 번호
US06077850

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