Triethylamine → Methyl 3-{[(2R)-2-(methoxymethyl)pyrrolidin-1-yl]methyl}-5-methylbenzoate

HRID 14139

Reaktionsgleichung

Reaktionsgleichung von HRID 14139
O[CH2:2][C:3]1[CH:4]=[C:5]([CH:10]=[C:11]([CH3:13])[CH:12]=1)[C:6]([O:8][CH3:9])=[O:7].C(N(CC)CC)C.CS(Cl)(=O)=O.[CH3:26][O:27][CH2:28][C@H:29]1[CH2:33][CH2:32][CH2:31][NH:30]1>C(Cl)Cl>[CH3:26][O:27][CH2:28][C@H:29]1[CH2:33][CH2:32][CH2:31][N:30]1[CH2:2][C:3]1[CH:4]=[C:5]([CH:10]=[C:11]([CH3:13])[CH:12]=1)[C:6]([O:8][CH3:9])=[O:7]

Komponenten

6

Edukt 4

HCID 8471TriethylamineHCID 31297Methanesulfonyl chlorideHCID 671216(2R)-2-(Methoxymethyl)pyrrolidineHCID 21086184Methyl 3-(hydroxymethyl)-5-methylbenzoate

Produkt 1

HCID 57487359Methyl 3-{[(2R)-2-(methoxymethyl)pyrrolidin-1-yl]methyl}-5-methylbenzoate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel2×

Versuchsvorschrift

To an ice-cold, stirred solution of methyl 3-(hydroxymethyl)-5-methylbenzoate (200 mg, 1.1 mmol) in methylene chloride (2.2 mL) is added triethylamine (0.304 mL, 2.2 mmol) followed by methanesulfonyl chloride (0.116 mL, 1.5 mmol). The reaction mixture is stirred for 15 min and filtered. (R)-2-(Methoxymethyl)pyrrolidine (380 mg, 3.3 mmol) is added to the filtrate, and the reaction mixture is stirred at room temperature for 5 h. The reaction mixture is diluted with methylene chloride (10 mL), washed with 1 N hydrochloric acid, and saturated sodium bicarbonate, dried (magnesium sulfate), filtered, and concentrated under reduced pressure. Purification by flash column chromatography (silica, 50% ethyl acetate/hexanes) provides the title compound. 1H NMR (300 MHz, CDCl3) δ 7.77 (s, 1H), 7.73 (s, 1H), 7.37 (s, 1H), 4.11 (d, J=13 Hz, 1H), 3.90 (d, J=6 Hz, 2H), 3.41 (m, 2H), 3.34 (m, 3H), 2.89 (m, 1H), 2.71 (m, 1H), 2.38 (s, 3H), 2.19 (m, 1H), 1.93 (m, 2H), 1.54 (m, 3H).

Aufarbeitung

  1. filtrationfiltered
  2. stirringthe reaction mixture is stirred at room temperature for 5 h
  3. washwashed with 1 N hydrochloric acid, and saturated sodium bicarbonate
  4. dry with materialdried (magnesium sulfate)
  5. filtrationfiltered
  6. concentrationconcentrated under reduced pressure
  7. customPurification by flash column chromatography (silica, 50% ethyl acetate/hexanes)

Quellen und Nachweise

ORD-Eintrag
ord-5ab56ee4015f46a0b0f5b807416433e5
Quelldatensatz
uspto-grants-2010_06
Patentnummer
US07727997B2

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