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Dimethyl Sulfoxide → 4-cyano-7-[(3S)-3-(dimethylamino)pyrrolidin-1-yl]-N,5-dimethyl-6-phenyl-N-(2-phenylethyl)-1,3-benzoxazole-2-carboxamide

HRID 17385
Notes
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Reaction equation

HRID 17385 reaction equation
CS(C)=O.[CH3:5][N:6]([CH3:12])[C@H:7]1[CH2:11][CH2:10][NH:9][CH2:8]1.[C:13]([C:15]1[C:20]2[N:21]=[C:22]([C:24]([N:26]([CH3:35])[CH2:27][CH2:28][C:29]3[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=3)=[O:25])[O:23][C:19]=2[C:18](F)=[C:17]([C:37]2[CH:42]=[CH:41][CH:40]=[CH:39][CH:38]=2)[C:16]=1[CH3:43])#[N:14].C(N(CC)CC)C>[Cl-].[Na+].O>[C:13]([C:15]1[C:20]2[N:21]=[C:22]([C:24]([N:26]([CH3:35])[CH2:27][CH2:28][C:29]3[CH:30]=[CH:31][CH:32]=[CH:33][CH:34]=3)=[O:25])[O:23][C:19]=2[C:18]([N:9]2[CH2:10][CH2:11][C@H:7]([N:6]([CH3:12])[CH3:5])[CH2:8]2)=[C:17]([C:37]2[CH:42]=[CH:41][CH:40]=[CH:39][CH:38]=2)[C:16]=1[CH3:43])#[N:14]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 679Dimethyl Sulfoxide2×HCID 8471TriethylamineHCID 7019156(3S)-(-)-3-(Dimethylamino)pyrrolidineHCID 685850784-cyano-7-fluoro-N,5-dimethyl-6-phenyl-N-(2-phenylethyl)-1,3-benzoxazole-2-carboxamide

Product 1

HCID 685848574-cyano-7-[(3S)-3-(dimethylamino)pyrrolidin-1-yl]-N,5-dimethyl-6-phenyl-N-(2-phenylethyl)-1,3-benzoxazole-2-carboxamide

Reagents, catalysts & solvents 1

HCID 57417360Sodium chloride; waterSolvent

Procedure

Under nitrogen atmosphere, a dimethyl sulfoxide (3 ml) solution of (3S)-3-(dimethylamino)pyrrolidine (110 μl, 871 μmol) was added at 150° C. to a dimethyl sulfoxide (12 ml) solution of 4-cyano-7-fluoro-N,5-dimethyl-6-phenyl-N-(2-phenylethyl)-1,3-benzoxazole-2-carboxamide (I-120) (300 mg, 726 μmol) and triethylamine (132 μl, 944 μmol), followed by stirring at the same temperature for 70 minutes. After cooling, saturated brine was added to the reaction liquid, and the reaction liquid was extracted with ethyl acetate. Next, the combined organic layer was washed with saturated brine, dried over anhydrous magnesium sulfate, filtered, and the filtrate was concentrated under reduced pressure. The resulting residue was subjected to silica gel column chromatography, and the eluate with dichloromethane/methanol (20:1, v/v) gave a crude product of the entitled compound as a solid, and the solid was suspended and washed in diisopropyl ether to obtain the entitled compound (161 mg, 44%) as a pale yellow solid.

Workup

  1. temperatureAfter cooling
  2. customthe reaction liquid
  3. extractionwas extracted with ethyl acetate
  4. washNext, the combined organic layer was washed with saturated brine
  5. dry with materialdried over anhydrous magnesium sulfate
  6. filtrationfiltered
  7. concentrationthe filtrate was concentrated under reduced pressure

Sources & evidence

ORD record
ord-a24d72036e25496789f93198acff172f
Source dataset
uspto-grants-2010_06
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07737166B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes