Hydrochloric Acid → HCID 69213994, compound

HRID 2221990Notes

Reaction equation

[CH2:1]([C:3]1[S:4][CH:5]=[C:6](/[CH:8]=[CH:9]/[C:10]2[C:11]([O:21][CH2:22][C:23]3[CH:43]=[CH:42][C:26]([O:27][CH2:28][C:29]4[N:30]=[C:31](/[CH:35]=[CH:36]/[C:37]([O:39]CC)=[O:38])[O:32][C:33]=4[CH3:34])=[C:25]([O:44][CH3:45])[CH:24]=3)=[N:12][N:13]([C:15]3[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=3)[CH:14]=2)[N:7]=1)[CH3:2].O1CCCC1.[OH-].[Na+].Cl>O.C(O)C>[CH2:1]([C:3]1[S:4][CH:5]=[C:6](/[CH:8]=[CH:9]/[C:10]2[C:11]([O:21][CH2:22][C:23]3[CH:43]=[CH:42][C:26]([O:27][CH2:28][C:29]4[N:30]=[C:31](/[CH:35]=[CH:36]/[C:37]([OH:39])=[O:38])[O:32][C:33]=4[CH3:34])=[C:25]([O:44][CH3:45])[CH:24]=3)=[N:12][N:13]([C:15]3[CH:16]=[CH:17][CH:18]=[CH:19][CH:20]=3)[CH:14]=2)[N:7]=1)[CH3:2]

Participants

Conditions

Temperature: 50 °C

Procedure

To a mixture of ethyl (2E)-3-[4-({4-[({4-[(E)-2-(2-ethyl-1,3-thiazol-4-yl)ethenyl]-1-phenyl-1H-pyrazol-3-yl}oxy)methyl]-2-methoxyphenoxy}methyl)-5-methyl-1,3-oxazol-2-yl]-2-propenoate (0.25 g), tetrahydrofuran (2 mL) and ethanol (2 mL) was added 1N aqueous sodium hydroxide solution (2 mL), and the mixture was stirred at 50° C. for 2 hrs. 1N hydrochloric acid and water were added to the reaction mixture to acidify the solution, and the precipitated crystals were collected by filtration to give (2E)-3-[4-({4-[({4-[(E)-2-(2-ethyl-1,3-thiazol-4-yl)ethenyl]-1-phenyl-1H-pyrazol-3-yl}oxy)methyl]-2-methoxyphenoxy}methyl)-5-methyl-1,3-oxazol-2-yl]-2-propenoic acid as colorless crystals (0.21 g, yield 88%). Recrystallization from acetone-hexane gave colorless prism crystals. melting point: 125-126° C.

Workup

filtrationthe precipitated crystals were collected by filtration

Sources & evidence

ORD record: ord-e22b061f2fe64f41b39040290239767f
Source dataset: uspto-grants-2008_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07368578B2

Reaction notes

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