2-Methyl-3-butyn-2-ol → 9-(3-Hydroxy-3-methyl-but-1-ynyl)-4-methoxycarbonylmethyl-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid methyl ester

HRID 575124Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 575124
[CH3:1][O:2][C:3]([C:5]1[S:6][C:7]2[CH:8]([CH2:20][C:21]([O:23][CH3:24])=[O:22])[CH2:9][O:10][C:11]3[CH:18]=[CH:17][C:16](Br)=[CH:15][C:12]=3[C:13]=2[N:14]=1)=[O:4].C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.[CH3:44][C:45]([OH:49])([C:47]#[CH:48])[CH3:46]>CN(C=O)C.[Cu]I>[CH3:1][O:2][C:3]([C:5]1[S:6][C:7]2[CH:8]([CH2:20][C:21]([O:23][CH3:24])=[O:22])[CH2:9][O:10][C:11]3[CH:18]=[CH:17][C:16]([C:48]#[C:47][C:45]([OH:49])([CH3:46])[CH3:44])=[CH:15][C:12]=3[C:13]=2[N:14]=1)=[O:4]

Komponenten

6

Edukt 3

HCID 82582-Methyl-3-butyn-2-olHCID 11776TriphenylphosphineHCID 866931499-Bromo-4-methoxycarbonylmethyl-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid methyl ester

Produkt 1

HCID 866931489-(3-Hydroxy-3-methyl-but-1-ynyl)-4-methoxycarbonylmethyl-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid methyl esterAusbeute 77 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)KatalysatorHCID 6228DimethylformamideLösungsmittel

Reaktionsbedingungen

Temperatur
80 °C

Versuchsvorschrift

To a stirred mixture of 9-Bromo-4-methoxycarbonylmethyl-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid methyl ester (90 mg, 0.22 mmol) in TEA (5 mL) and DMF (1 mL) were added Pd(PPh3)Cl2 (15 mg, 0.021 mmol), PPh3 (17.2 mg, 0.065 mmol), CuI (8.3 mg, 0.043 mmol) and 2-methylbut-3-yn-2-ol (92 mg, 1.09 mmol). The reaction mixture was degassed with N2 and heated to 80° C. in a microwave reactor for 1.5 h. Then the mixture was cooled to room temperature, EtOAc was added. The mixture was filtered through Celite. The filtrate was washed with saturated brine, dried over Na2SO4, filtered, concentrated in vacuo, and purified by flash column chromatography (silica gel, EtOAc in hexane from 10% to 20%) to afford 9-(3-Hydroxy-3-methyl-but-1-ynyl)-4-methoxycarbonylmethyl-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid methyl ester (70 mg, 77%) as a light yellow solid. LC-MS (ESI & APCI): 416.7 (M+1).

Aufarbeitung

  1. customThe reaction mixture was degassed with N2
  2. temperatureThen the mixture was cooled to room temperature
  3. additionEtOAc was added
  4. filtrationThe mixture was filtered through Celite
  5. washThe filtrate was washed with saturated brine
  6. dry with materialdried over Na2SO4
  7. filtrationfiltered
  8. concentrationconcentrated in vacuo
  9. custompurified by flash column chromatography (silica gel, EtOAc in hexane from 10% to 20%)

Quellen und Nachweise

ORD-Eintrag
ord-68ddfa13846449209fbb785e223866e9
Quelldatensatz
uspto-grants-2015_05
Patentnummer
US09034866B2

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