2-Fluorobenzenesulphonyl chloride → methyl cis-(3aRS,9bRS)-7-(2-fluorobenzenesulfonylamino)-1,3a,4,9b-tetrahydro-2H-furo[2,3-c]chromene-6-carboxylate

HRID 927945Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 927945
[F:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[S:8](Cl)(=[O:10])=[O:9].[NH2:12][C:13]1[C:22]([C:23]([O:25][CH3:26])=[O:24])=[C:21]2[C:16]([C@H:17]3[CH2:29][CH2:28][O:27][C@H:18]3[CH2:19][O:20]2)=[CH:15][CH:14]=1>C(Cl)Cl.N1C=CC=CC=1>[F:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[S:8]([NH:12][C:13]1[C:22]([C:23]([O:25][CH3:26])=[O:24])=[C:21]2[C:16]([C@H:17]3[CH2:29][CH2:28][O:27][C@H:18]3[CH2:19][O:20]2)=[CH:15][CH:14]=1)(=[O:10])=[O:9]

Komponenten

5

Edukt 2

HCID 1377612-Fluorobenzenesulphonyl chlorideHCID 86713281methyl cis-(3aRS,9bRS)-7-amino-1,3a,4,9b-tetrahydro-2H-furo[2,3-c]chromene-6-carboxylate2×

Produkt 1

HCID 86713300methyl cis-(3aRS,9bRS)-7-(2-fluorobenzenesulfonylamino)-1,3a,4,9b-tetrahydro-2H-furo[2,3-c]chromene-6-carboxylateAusbeute 66,3 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 1049PyridineLösungsmittelHCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

2-Fluorobenzenesulfonyl chloride (0.5 g) was added to a solution of methyl cis-(3aRS,9bRS)-7-amino-1,3a,4,9b-tetrahydro-2H-furo[2,3-c]chromene-6-carboxylate (Intermediate 19, 0.53 g) in DCM (10 mL) and pyridine (20 mL) and the resultant mixture was stirred at room temperature for 48 hours. The mixture was evaporated to dryness and the residue was treated with water, extracted with DCM, dried (MgSO4) and filtered. The filtrate was evaporated to dryness and the residue was purified by chromatography on silica, eluting with a mixture of ethyl acetate and cyclohexane with a gradient of 0-60% to give methyl cis-(3aRS,9bRS)-7-(2-fluorobenzenesulfonylamino)-1,3a,4,9b-tetrahydro-2H-furo[2,3-c]chromene-6-carboxylate (0.574 g) as a pale yellow solid.

Aufarbeitung

  1. customThe mixture was evaporated to dryness
  2. additionthe residue was treated with water
  3. extractionextracted with DCM
  4. dry with materialdried (MgSO4)
  5. filtrationfiltered
  6. customThe filtrate was evaporated to dryness
  7. customthe residue was purified by chromatography on silica
  8. washeluting with a mixture of ethyl acetate and cyclohexane with a gradient of 0-60%

Quellen und Nachweise

ORD-Eintrag
ord-63701c34ae034484a4abc7f9c4fff0fe
Quelldatensatz
uspto-grants-2016_03
Patentnummer
US09290472B2

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