Hydrochloric Acid → 2-[4-(2,4-difluoro-phenyl)-4H-[1,2,4]triazol-3-yl]-4,5-dihydro-6-oxa-1-thia-benzo[e]azulene-9-carboxylic acid

HRID 2079014Notes

Reaction equation

HRID 2079014 reaction equation
C[O:2][C:3]([C:5]1[CH:6]=[CH:7][C:8]2[O:17][CH2:16][CH2:15][C:14]3[CH:13]=[C:12]([C:18]4[N:22]([C:23]5[CH:28]=[CH:27][C:26]([F:29])=[CH:25][C:24]=5[F:30])[CH:21]=[N:20][N:19]=4)[S:11][C:10]=3[C:9]=2[CH:31]=1)=[O:4].[OH-].[Na+].Cl>C1COCC1.C(O)C>[F:30][C:24]1[CH:25]=[C:26]([F:29])[CH:27]=[CH:28][C:23]=1[N:22]1[CH:21]=[N:20][N:19]=[C:18]1[C:12]1[S:11][C:10]2[C:9]3[CH:31]=[C:5]([C:3]([OH:4])=[O:2])[CH:6]=[CH:7][C:8]=3[O:17][CH2:16][CH2:15][C:14]=2[CH:13]=1

Participants

6

Reactant 3

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 66886046HCID 66886046, compound

Product 1

HCID 668861572-[4-(2,4-difluoro-phenyl)-4H-[1,2,4]triazol-3-yl]-4,5-dihydro-6-oxa-1-thia-benzo[e]azulene-9-carboxylic acid

Reagents, catalysts & solvents 2

HCID 702EthanolSolventHCID 8028TetrahydrofuranSolvent

Procedure

To a solution of 2-[4-(2,4-difluoro-phenyl)-4H-[1,2,4]triazol-3-yl]-4,5-dihydro-6-oxa-1-thia-benzo[e]azulene-9-carboxylic acid methyl ester (210 mg) in THF (4 mL) and ethanol (2 mL) was added sodium hydroxide solution (38 mg in 2 mL of water) and the reaction stirred at room temperature for 16 h. The reaction was then acidified with 2 M hydrochloric acid and the resulting solid was filtered and air-dried to give 2-[4-(2,4-difluoro-phenyl)-4H-[1,2,4]triazol-3-yl]-4,5-dihydro-6-oxa-1-thia-benzo[e]azulene-9-carboxylic acid.

Workup

  1. filtrationthe resulting solid was filtered
  2. customair-dried

Sources & evidence

ORD record
ord-2bac9092c5bc4121a69b2626d82112db
Source dataset
uspto-grants-2011_04
Patent number
US07928248B2

Reaction notes

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