Sodium Hydroxide → (Z)-2-[[2-chloro-4-[3-(3-hydroxyphenyl)-1-oxopropan-1-yl]benzoyl]amino]-3-(2,4-dimethylthiazol-5-yl)propenoic acid

HRID 1058442Notes

Reaction equation

HRID 1058442 reaction equation
[OH-].[Na+].C[O:4][C:5](=[O:36])/[C:6](/[NH:15][C:16](=[O:35])[C:17]1[CH:22]=[CH:21][C:20]([C:23](=[O:33])[CH2:24][CH2:25][C:26]2[CH:31]=[CH:30][CH:29]=[C:28]([OH:32])[CH:27]=2)=[CH:19][C:18]=1[Cl:34])=[CH:7]/[C:8]1[S:12][C:11]([CH3:13])=[N:10][C:9]=1[CH3:14]>CO.O1CCCC1>[Cl:34][C:18]1[CH:19]=[C:20]([C:23](=[O:33])[CH2:24][CH2:25][C:26]2[CH:31]=[CH:30][CH:29]=[C:28]([OH:32])[CH:27]=2)[CH:21]=[CH:22][C:17]=1[C:16]([NH:15]/[C:6](=[CH:7]\[C:8]1[S:12][C:11]([CH3:13])=[N:10][C:9]=1[CH3:14])/[C:5]([OH:36])=[O:4])=[O:35]

Participants

4

Reactant 2

HCID 14798Sodium HydroxideHCID 59038456(Z)-2-[[2-chloro-4-[3-(3-hydroxyphenyl)-1-oxopropan-1-yl]benzoyl]amino]-3-(2,4-dimethylthiazol-5-yl)propenoic acid methyl ester

Product 1

HCID 59038360(Z)-2-[[2-chloro-4-[3-(3-hydroxyphenyl)-1-oxopropan-1-yl]benzoyl]amino]-3-(2,4-dimethylthiazol-5-yl)propenoic acidYield 71%

Reagents, catalysts & solvents 1

HCID 21899815MeOH tetrahydrofuranSolvent

Procedure

An aqueous 1N solution of sodium hydroxide (0.6 mL, 0.6 mmol) was added to a solution of (Z)-2-[[2-chloro-4-[3-(3-hydroxyphenyl)-1-oxopropan-1-yl]benzoyl]amino]-3-(2,4-dimethylthiazol-5-yl)propenoic acid methyl ester (Example 227; 95 mg, 0.19 mmol) in methanol/tetrahydrofuran (1:1; 2.4 mL). The solution was stirred at room temperature for 6 h and the solvent was evaporated. Water (5 mL) was added and the mixture was extracted with diethyl ether. The organic extract was discarded and the aqueous layer was acidified with 1N hydrochloric acid solution (0.6 mL) and stirred for 30 min at room temperature. The resulting precipitate was filtered off, washed with water, dried and crystallized from tetrahydrofuran/methanol/water to furnish (Z)-2-[[2-chloro-4-[3-(3-hydroxyphenyl)-1-oxopropan-1-yl]benzoyl]amino]-3-(2,4-dimethylthiazol-5-yl)propenoic acid (65 mg, 71% yield) as a colorless solid.

Workup

  1. customthe solvent was evaporated
  2. additionWater (5 mL) was added
  3. extractionthe mixture was extracted with diethyl ether
  4. extractionThe organic extract
  5. stirringstirred for 30 min at room temperature
  6. filtrationThe resulting precipitate was filtered off
  7. washwashed with water
  8. customdried
  9. customcrystallized from tetrahydrofuran/methanol/water

Sources & evidence

ORD record
ord-f4dcf3a20ad54eaa984f82a5d860b79d
Source dataset
uspto-grants-2003_02
Patent number
US06515124B2

Reaction notes

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