3-Phenylcyclobutan-1-amine → Ethyl 6-chloro-7-(4-(3-phenylcyclobutylcarbamoyl)phenoxy)chroman-4-carboxylate

HRID 510766Notes

Reaction equation

HRID 510766 reaction equation
[C:1]1([CH:7]2[CH2:10][CH:9]([NH2:11])[CH2:8]2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[Cl:12][C:13]1[CH:14]=[C:15]2[C:20](=[CH:21][C:22]=1[O:23][C:24]1[CH:32]=[CH:31][C:27]([C:28](O)=[O:29])=[CH:26][CH:25]=1)[O:19][CH2:18][CH2:17][CH:16]2[C:33]([O:35][CH2:36][CH3:37])=[O:34].Cl.C(N=C=NCCCN(C)C)C>CN(C=O)C.CN(C)C1C=CN=CC=1.CCOC(C)=O>[Cl:12][C:13]1[CH:14]=[C:15]2[C:20](=[CH:21][C:22]=1[O:23][C:24]1[CH:32]=[CH:31][C:27]([C:28](=[O:29])[NH:11][CH:9]3[CH2:8][CH:7]([C:1]4[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=4)[CH2:10]3)=[CH:26][CH:25]=1)[O:19][CH2:18][CH2:17][CH:16]2[C:33]([O:35][CH2:36][CH3:37])=[O:34]

Participants

7

Reactant 3

HCID 5229613-Phenylcyclobutan-1-amineHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 582443954-(6-Chloro-4-(ethoxycarbonyl)chroman-7-yloxy)benzoic acid

Product 1

HCID 67080785Ethyl 6-chloro-7-(4-(3-phenylcyclobutylcarbamoyl)phenoxy)chroman-4-carboxylateYield 49.6%

Reagents, catalysts & solvents 3

HCID 142844-(Dimethylamino)pyridineCatalystHCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of 3-phenylcyclobutanamine (0.101 g, 0.686 mmol) in DMF (2 ml) was added 4-(6-chloro-4-(ethoxycarbonyl)chroman-7-yloxy)benzoic acid (0.129 g, 0.343 mmol), N,N-dimethylpyridin-4-amine (0.00838 g, 0.0686 mmol), and N1-((ethylimino)methylene)-N3,N3-dimethylpropane-1,3-diamine hydrochloride (0.0789 g, 0.412 mmol), and the reaction was stirred for 16 hours at ambient temperature. The reaction was diluted with EtOAc and washed with 1M hydrochloric acid, saturated sodium bicarbonate, and saturated sodium chloride. The organic layer was dried over anhydrous sodium sulfate, filtered, and concentrated. The crude material was on a Biotage SP1 system eluting with a 5-70% EtOAc in hexanes linear gradient to yield 86 mg of the title compound (49.5% yield).

Workup

  1. washwashed with 1M hydrochloric acid, saturated sodium bicarbonate, and saturated sodium chloride
  2. dry with materialThe organic layer was dried over anhydrous sodium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated
  5. washeluting with a 5-70% EtOAc in hexanes linear gradient

Sources & evidence

ORD record
ord-ad3cb147488249fc9c0ebde56f0b92c7
Source dataset
uspto-grants-2015_08
Patent number
US09096567B2

Reaction notes

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