Ethylene Glycol → 2-((Phenylmethyl)amino)benzoic acid

HRID 1243015

반응식

HRID 1243015 반응식
[O-]P([O-])([O-])=O.[K+].[K+].[K+].[CH2:9]([NH2:16])[C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1.I[C:18]1[CH:26]=[CH:25][CH:24]=[CH:23][C:19]=1[C:20]([OH:22])=[O:21].C(O)CO.Cl>[Cu]I.C(OCC)C.O.CC(O)C>[CH2:9]([NH:16][C:18]1[CH:26]=[CH:25][CH:24]=[CH:23][C:19]=1[C:20]([OH:22])=[O:21])[C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1

참가 물질

10

반응물 5

HCID 174Ethylene GlycolHCID 313Hydrochloric AcidHCID 69412-Iodobenzoic acidHCID 7504BenzylamineHCID 62657Potassium Phosphate, Tribasic

생성물 1

HCID 810952-((Phenylmethyl)amino)benzoic acid수율 71%

시약·촉매·용매 4

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)촉매HCID 962Water용매HCID 3283Diethyl Ether용매HCID 3776Isopropanol용매

실험 절차

The general procedure under argon was followed using copper(I) iodide (10 mg, 0.05 mmol), K3PO4 (636 mg, 3.00 mmol), benzylamine (131 μL, 1.20 mmol), 2-iodobenzoic acid (248 mg, 1.00 mmol), ethylene glycol (111 μL, 2.00 mmol) and 2-propanol (1.0 mL). After heated for a specified duration, the reaction was allowed to reach room temperature. Water and diluted HCl (10%) was added until ˜pH 3. Diethyl ether (2 mL) was added and the organic layer was analyzed by tlc. The reaction mixture was further extracted by diethyl ether (4×10 mL) and the combined organic phase was washed with brine and dried over Na2SO4. The solvent was rotary evaporated and the yellowish-brown residue was purified by column chromatography using a solvent mixture (diethyl ether/ethyl acetate=1/1, Rf=0.3) to afford 2-(N-benzyl)aminobenzoic acid (161 mg, 71% isolated yield) as light yellow solid. For aryl bromide substrate: copper(I) iodide (19 mg, 0.10 mmol), K3PO4 (636 mg, 3.00 mmol), benzylamine (131 μl, 1.20 mmol), 2-bromobenzoic acid (201 mg, 1.00 mmol), ethylene glycol (111 μl, 2.00 mmol) and 1-butanol (1.0 mL) was used and heated to 100° C. The above workup procedures was followed and obtained 2-(N-benzyl)aminobenzoic acid (120 mg, 53% isolated yield) as light yellow solid. For aryl chloride substrate: copper(I) iodide (19 mg, 0.10 mmol), K3PO4 (636 mg, 3.00 mmol), benzylamine (131 μl, 1.20 mmol), 2-chlorobenzoic acid (157 mg, 1.00 mmol), ethylene glycol (111 μl, 2.00 mmol) and 1-butanol (1.0 mL) was used and heated to 100° C. The above workup procedures was followed and obtained 2-(N-benzyl)aminobenzoic acid (109 mg, 48% isolated yield) as light yellow solid. The spectral data (1H NMR) matched with the literature references and indicated >95% purity. See Chang, M. R.; Takeuchi, Y.; Hashigaki, K.; Yamato, M. Heterocycles 1992, 33, 147–152. Moore, J. A.; Sutherland, G. J.; Sowerby, R.; Kelly, E. G.; Palermo, S.; Webster, W. J. Org. Chem. 1969, 34, 887–892.

후처리

  1. temperatureAfter heated for a specified duration
  2. customto reach room temperature
  3. extractionThe reaction mixture was further extracted by diethyl ether (4×10 mL)
  4. washthe combined organic phase was washed with brine
  5. dry with materialdried over Na2SO4
  6. customThe solvent was rotary evaporated
  7. customthe yellowish-brown residue was purified by column chromatography

출처 및 근거

ORD 기록
ord-8e29b1688ae343c8bca09e2ef266bedc
출처 데이터셋
uspto-grants-2006_10
특허 번호
US07115784B2

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