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Potassium Carbonate → methyl (1aRS,7bSR)-5-[2-(azetidin-3-yl)-4-fluorobenzenesulfonylamino]-1,1a,2,7b-tetrahydrocyclopropa[c]chromene-4-carboxylate

HRID 927972
Notes
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Reaction equation

HRID 927972 reaction equation
[F:1][C:2]1[CH:7]=[CH:6][C:5]([S:8]([NH:11][C:12]2[C:21]([C:22]([O:24][CH3:25])=[O:23])=[C:20]3[C:15]([CH:16]4[CH2:26][CH:17]4[CH2:18][O:19]3)=[CH:14][CH:13]=2)(=[O:10])=[O:9])=[C:4]([CH:27]2[CH2:30][N:29](C(=O)C(F)(F)F)[CH2:28]2)[CH:3]=1.C(=O)([O-])[O-].[K+].[K+]>CO.O>[NH:29]1[CH2:30][CH:27]([C:4]2[CH:3]=[C:2]([F:1])[CH:7]=[CH:6][C:5]=2[S:8]([NH:11][C:12]2[C:21]([C:22]([O:24][CH3:25])=[O:23])=[C:20]3[C:15]([CH:16]4[CH2:26][CH:17]4[CH2:18][O:19]3)=[CH:14][CH:13]=2)(=[O:9])=[O:10])[CH2:28]1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 2

HCID 11430Potassium CarbonateHCID 86713312methyl (1aRS,7bSR)-5-{4-fluoro-2-[1-(2,2,2-trifluoroacetyl)azetidin-3-yl]benzene-sulfonylamino}-1,1a,2,7b-tetrahydrocyclopropa[c]chromene-4-carboxylate2×

Product 1

HCID 71006941methyl (1aRS,7bSR)-5-[2-(azetidin-3-yl)-4-fluorobenzenesulfonylamino]-1,1a,2,7b-tetrahydrocyclopropa[c]chromene-4-carboxylateYield 89.8%

Reagents, catalysts & solvents 2

HCID 887
Methanol
Solvent
HCID 962WaterSolvent

Procedure

A mixture of methyl (1aRS,7bSR)-5-{4-fluoro-2-[1-(2,2,2-trifluoroacetyl)azetidin-3-yl]benzene-sulfonylamino}-1,1a,2,7b-tetrahydrocyclopropa[c]chromene-4-carboxylate (Intermediate 88, 0.294 g) and potassium carbonate (0.155 g) in methanol (5 mL) and water (0.5 mL) was stirred at room temperature for 45 minutes. The mixture was concentrated in vacuo and the residue was triturated with 10% methanol in DCM and filtered. The filtrate was concentrated in vacuo and the residue was purified by chromatography on silica, eluting with a mixture of methanol and DCM with a gradient of 0-40% to give methyl (1aRS,7bSR)-5-[2-(azetidin-3-yl)-4-fluoro-benzenesulfonylamino)-1,1a,2,7b-tetrahydrocyclopropa[c]chromene-4-carboxylate (0.216 g) as a pale yellow foam.

Workup

  1. concentrationThe mixture was concentrated in vacuo
  2. customthe residue was triturated with 10% methanol in DCM
  3. filtrationfiltered
  4. concentrationThe filtrate was concentrated in vacuo
  5. customthe residue was purified by chromatography on silica
  6. washeluting with a mixture of methanol and DCM with a gradient of 0-40%

Sources & evidence

ORD record
ord-70a0dab1f9d74fa8aed6b396b8654beb
Source dataset
uspto-grants-2016_03
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09290472B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes