Tetrahydrofuran → HCID 58156091, compound

HRID 1521439Notes

Reaction equation

HRID 1521439 reaction equation
O[Li].O.C([O:6][C:7]([C:9]1[CH:10]=[N:11][N:12]([C:14]2[NH:18][C:17]3[CH:19]=[C:20]([Cl:25])[C:21]([Cl:24])=[C:22]([Br:23])[C:16]=3[N:15]=2)[CH:13]=1)=[O:8])C.C1COCC1>O>[Br:23][C:22]1[C:16]2[N:15]=[C:14]([N:12]3[CH:13]=[C:9]([C:7]([OH:8])=[O:6])[CH:10]=[N:11]3)[NH:18][C:17]=2[CH:19]=[C:20]([Cl:25])[C:21]=1[Cl:24]

Participants

5

Reactant 3

HCID 8028TetrahydrofuranHCID 168937Lithium hydroxide, monohydrateHCID 66937225HCID 66937225, compound

Product 1

HCID 58156091HCID 58156091, compoundYield 83%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
23 °C

Procedure

LiOH.H2O (0.046 g, 1.09 mmol) was added to a mixture of 1-(4-Bromo-5,6-dichloro-1H-benzoimidazol-2-yl)-1H-pyrazole-4-carboxylic acid ethyl ester (0.088 g, 0.22 mmol), THF (1 mL), and water (0.33 mL), and the mixture was stirred 18 h at 23° C. The solvent was evaporated, water (3 mL) was added and the mixture acidified with 1M HCl. The resulting white precipitate was filtered and dried to yield the titled compound (0.068 g, 83%). MS (ESI/CI): mass calcd. for C11H5BrCl2N4O2, 374.9; m/z found, 375.9 [M+H]+. 1H NMR (500 MHz, DMSO-d6): 8.89 (s, 1H), 8.32 (s, 1H), 7.74 (s, 1H).

Workup

  1. customThe solvent was evaporated
  2. additionwater (3 mL) was added
  3. filtrationThe resulting white precipitate was filtered
  4. customdried

Sources & evidence

ORD record
ord-baa5a7c70b3d421db5aa272a9775d358
Source dataset
uspto-grants-2015_07
Patent number
US09073923B2

Reaction notes

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