Ammonium Chloride → 9-Bromo-4,5-dihydro-[1]benzoxepino[5,4-d]thiazole-2-carboxamide

HRID 1190259Notes

Reaction equation

HRID 1190259 reaction equation
[Br:1][C:2]1[CH:3]=[CH:4][C:5]2[O:14][CH2:13][CH2:12][C:11]3[S:10][C:9]([C:15](O)=[O:16])=[N:8][C:7]=3[C:6]=2[CH:18]=1.[Cl-].[NH4+].CC[N:23](C(C)C)C(C)C.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F>C1COCC1.C(=O)(O)[O-].[Na+].C(OCC)(=O)C>[Br:1][C:2]1[CH:3]=[CH:4][C:5]2[O:14][CH2:13][CH2:12][C:11]3[S:10][C:9]([C:15]([NH2:23])=[O:16])=[N:8][C:7]=3[C:6]=2[CH:18]=1

Participants

8

Reactant 4

HCID 25517Ammonium ChlorideHCID 81531DiisopropylethylamineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 582039379-Bromo-4,5-dihydrobenzo[2,3]oxepino[4,5-D]thiazole-2-carboxylic acid

Product 1

HCID 582039029-Bromo-4,5-dihydro-[1]benzoxepino[5,4-d]thiazole-2-carboxamide

Reagents, catalysts & solvents 3

HCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolventHCID 516892Sodium BicarbonateSolvent

Procedure

To 9-Bromo-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid (2.13 g, 6.53 mmol) in THF (22 mL) was added ammonium chloride (1.40 g, 26.1 mmol), DIEA (2.27 mL, 13.1 mmol), and then HATU (2.73 g, 7.18 mmol). The reaction mixture was allowed to stir at room temperature for 16 h. The reaction mixture was diluted with sodium bicarbonate and ethyl acetate. The mixture was filtered and the filtrate was extracted with EtOAc. The combined organic extracts were washed with water, brine, dried over MgSO4, filtered, and concentrated under reduced pressure to give 9-Bromo-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid amide (2.12, quantitative yield). LC/MS (ESI+): m/z 327 (M+H)

Workup

  1. filtrationThe mixture was filtered
  2. extractionthe filtrate was extracted with EtOAc
  3. washThe combined organic extracts were washed with water, brine
  4. dry with materialdried over MgSO4
  5. filtrationfiltered
  6. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-1af1d9bdbbbb461d8dc39a2aad6701aa
Source dataset
uspto-grants-2014_03
Patent number
US08673952B2

Reaction notes

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