Sodium Hydroxide → HCID 12042595, compound

HRID 2230820Notes

Reaction equation

HRID 2230820 reaction equation
C[O:2][C:3](=[O:34])[C@H:4]([CH2:16][C:17]1[CH:22]=[CH:21][C:20]([NH:23][C:24]([C:26]2[C:31]([Cl:32])=[CH:30][CH:29]=[CH:28][C:27]=2[Cl:33])=[O:25])=[CH:19][CH:18]=1)[NH:5][C:6]([C:8]1[C:13]([CH3:14])=[CH:12][CH:11]=[CH:10][C:9]=1[Cl:15])=[S:7].[OH-].[Na+]>C(O)C>[Cl:15][C:9]1[CH:10]=[CH:11][CH:12]=[C:13]([CH3:14])[C:8]=1[C:6](=[S:7])[NH:5][C@H:4]([C:3]([OH:34])=[O:2])[CH2:16][C:17]1[CH:18]=[CH:19][C:20]([NH:23][C:24]([C:26]2[C:27]([Cl:33])=[CH:28][CH:29]=[CH:30][C:31]=2[Cl:32])=[O:25])=[CH:21][CH:22]=1

Participants

4

Reactant 2

HCID 14798Sodium HydroxideHCID 12042594HCID 12042594, compound

Product 1

HCID 12042595HCID 12042595, compoundYield 96.1%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Conditions

Temperature
52.5 °C

Procedure

To a suspension of N-[(2-chloro-6-methylphenyl)thioxomethyl]-4-[[(2,6-dichlorophenyl)carbonyl]amino]-L-phenylalanine methyl ester (2.89 mmol, 1.55 g) in ethanol (8 mL) was added aqueous 1.0N sodium hydroxide (5 mL) at room temperature. The mixture was heated to 50-55° C. and the resulting clear solution was stirred for 3-4 h. TLC analysis of the mixture indicated the absence of starting material. The mixture was concentrated to remove ethanol, then was diluted with 15 mL of water and extracted with 25 mL of diethyl ether to remove any neutral impurities. The aqueous layer was acidified with 1N HCl and the precipitated colorless solid was extracted into ethyl acetate (2×30 mL). The combined extracts were washed with brine, dried (MgSO4) and concentrated in vacuo to afford 1.45 g (96%) of N-[(2-chloro-6-methylphenyl)thioxomethyl]-4-[[(2,6-dichlorophenyl)carbonyl]amino]-L-phenylalanine as an amorphous colorless solid. HRMS: Obs. mass, 521.0241. Calcd. mass, 521.0260 (M+H).

Workup

  1. concentrationThe mixture was concentrated
  2. customto remove ethanol
  3. additionwas diluted with 15 mL of water
  4. extractionextracted with 25 mL of diethyl ether
  5. customto remove any neutral impurities
  6. extractionthe precipitated colorless solid was extracted into ethyl acetate (2×30 mL)
  7. washThe combined extracts were washed with brine
  8. dry with materialdried (MgSO4)
  9. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-72ececf8cc804ca698f5192706c70e2a
Source dataset
uspto-grants-2002_07
Patent number
US06426348B1

Reaction notes

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