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N,N-Dimethyl-1,3-propanediamine → (1aRS,7bSR)-5-[2-(3-dimethylaminopropylamino)-benzenesulfonylamino]-1,1a,2,7b-tetrahydrocyclopropa[c]chromene-4-carboxylic acid

HRID 927858
Notes
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Reaction equation

HRID 927858 reaction equation
F[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[S:8]([NH:11][C:12]1[C:21]([C:22]([OH:24])=[O:23])=[C:20]2[C:15]([CH:16]3[CH2:25][CH:17]3[CH2:18][O:19]2)=[CH:14][CH:13]=1)(=[O:10])=[O:9].[CH3:26][N:27]([CH3:32])[CH2:28][CH2:29][CH2:30][NH2:31].C(N(CC)CC)C>CN1C(=O)CCC1>[CH3:26][N:27]([CH3:32])[CH2:28][CH2:29][CH2:30][NH:31][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[S:8]([NH:11][C:12]1[C:21]([C:22]([OH:24])=[O:23])=[C:20]2[C:15]([CH:16]3[CH2:25][CH:17]3[CH2:18][O:19]2)=[CH:14][CH:13]=1)(=[O:10])=[O:9]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 7993N,N-Dimethyl-1,3-propanediamineHCID 8471TriethylamineHCID 86713249(1aRS,7bSR)-5-(2-fluorobenzenesulfonylamino)-1,1a,2,7b-tetrahydrocyclopropa[c]chromene-4-carboxylic acid2×

Product 1

HCID 78078847(1aRS,7bSR)-5-[2-(3-dimethylaminopropylamino)-benzenesulfonylamino]-1,1a,2,7b-tetrahydrocyclopropa[c]chromene-4-carboxylic acidYield 43.5%

Reagents, catalysts & solvents 1

HCID 13387N-methyl-2-pyrrolidoneSolvent

Conditions

Temperature
140 °C

Procedure

A mixture of (1aRS,7bSR)-5-(2-fluorobenzenesulfonylamino)-1,1a,2,7b-tetrahydrocyclopropa-[c]chromene-4-carboxylic acid (Intermediate 67, 0.15 g), 3-dimethylaminopropylamine (1.26 g) and triethylamine (0.62 g) in NMP (6 mL) was stirred and heated at 140° C. for 48 hours. After cooling, the mixture was concentrated under vacuum and the residue was purified by chromatography on silica, eluting with a mixture of methanol and DCM with a gradient of 5-10%. The resultant product was repurified by preparative TLC, eluting with a mixture of methanol and DCM (10%) to give (1aRS,7bSR)-5-[2-(3-dimethylaminopropylamino)-benzenesulfonylamino]-1,1a,2,7b-tetrahydrocyclopropa[c]chromene-4-carboxylic acid (0.08 g) as an off white solid.

Workup

  1. temperatureAfter cooling
  2. concentrationthe mixture was concentrated under vacuum
  3. customthe residue was purified by chromatography on silica
  4. washeluting with a mixture of methanol and DCM with a gradient of 5-10%
  5. customThe resultant product was repurified by preparative TLC
  6. washeluting with a mixture of methanol and DCM (10%)

Sources & evidence

ORD record
ord-b1e840fdf5254a3b8a29ba2ed5168f55
Source dataset
uspto-grants-2016_03
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09290472B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes