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Acetic Acid → (+/-)-1-(4-Amino-quinazolin-7-ylmethyl)-4-(6-chloro-benzo[b]thiophene-2-sulfonyl)-6-oxo-piperazine-2-carboxylic acid methyl ester

HRID 1433017
Notes
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Reaction equation

HRID 1433017 reaction equation
[CH3:1][O:2][C:3]([CH:5]1[CH2:10][N:9]([S:11]([C:14]2[S:18][C:17]3[CH:19]=[C:20]([Cl:23])[CH:21]=[CH:22][C:16]=3[CH:15]=2)(=[O:13])=[O:12])[CH2:8][C:7](=[O:24])[N:6]1[CH2:25][C:26]1[CH:31]=C[C:29](C#N)=[C:28](N)[CH:27]=1)=[O:4].[N:35]1[CH:40]=[N:39][CH:38]=[N:37][CH:36]=1.CC(O)=O>CCO>[CH3:1][O:2][C:3]([CH:5]1[CH2:10][N:9]([S:11]([C:14]2[S:18][C:17]3[CH:19]=[C:20]([Cl:23])[CH:21]=[CH:22][C:16]=3[CH:15]=2)(=[O:12])=[O:13])[CH2:8][C:7](=[O:24])[N:6]1[CH2:25][C:26]1[CH:31]=[C:36]2[C:29]([C:40]([NH2:35])=[N:39][CH:38]=[N:37]2)=[CH:28][CH:27]=1)=[O:4]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 176Acetic AcidHCID 92621,3,5-TriazineHCID 54383939(+/-)-1-(3-Amino-4-cyano-benzyl)-4-(6-chloro-benzo[b]thiophene-2-sulfonyl)-6-oxo-piperazine-2-carboxylic acid methyl ester

Product 1

HCID 54356203(+/-)-1-(4-Amino-quinazolin-7-ylmethyl)-4-(6-chloro-benzo[b]thiophene-2-sulfonyl)-6-oxo-piperazine-2-carboxylic acid methyl esterYield 38.9%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

A solution containing (±)-1-(3-amino-4-cyano-benzyl)-4-(6-chloro-benzo[b]thiophene-2-sulfonyl)-6-oxo-piperazine-2-carboxylic acid methyl ester (42 mg, 0.08 mmol), EXAMPLE 99, 1,3,5-triazine (40 mg, 0.48 mmol), and glacial HOAc (30 mg, 0.48 mmol) in absolute EtOH (1 mL) is maintained at reflux for 16 hours. The reaction mixture is concentrated and then dissolved in water/CH3CN and purified by reverse-phase HPLC [Buffer A: water w/0.1% TFA; Buffer B: CH3CN w/0.1% TFA; Gradient: 0% B to 60% B over 30 min] to provide 17 mg (32%) of the title compound as a white solid.

Workup

  1. temperatureis maintained
  2. temperatureat reflux for 16 hours
  3. concentrationThe reaction mixture is concentrated
  4. dissolutiondissolved in water/CH3CN
  5. custompurified by reverse-phase HPLC [Buffer A: water

Sources & evidence

ORD record
ord-323db0cbf73f40069228e745b3e263a1
Source dataset
uspto-grants-2009_11
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07612075B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes