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Diisopropylethylamine → 4-amino-3-ethoxy-N-[(3R)-1-methylpyrrolidin-3-yl]benzamide

HRID 2234443
Notes
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Reaction equation

HRID 2234443 reaction equation
[NH2:1][C:2]1[CH:10]=[CH:9][C:5]([C:6]([OH:8])=O)=[CH:4][C:3]=1[O:11][CH2:12][CH3:13].CN(C(ON1N=[N:29][C:24]2[CH:25]=[CH:26][CH:27]=[N:28][C:23]1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.Cl.Cl.CN1CC[C@@H](N)C1.C(N(C(C)C)CC)(C)C>CN(C=O)C>[NH2:1][C:2]1[CH:10]=[CH:9][C:5]([C:6]([NH:29][C@@H:24]2[CH2:25][CH2:26][N:28]([CH3:27])[CH2:23]2)=[O:8])=[CH:4][C:3]=1[O:11][CH2:12][CH3:13]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 223974484-Amino-3-ethoxybenzoic acid2×HCID 53256048(3R)-1-Methyl-3-PyrrolidinaMine hydrochloride2×

Product 1

HCID 68681219
4-amino-3-ethoxy-N-[(3R)-1-methylpyrrolidin-3-yl]benzamide
Yield 68%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

4-amino-3-ethoxybenzoic acid (Intermediate 164; 400 mg, 2.21 mmol), HATU (1.26 g, 3.31 mmol) and (3R)-1-methylpyrrolidin-3-amine di Hydrochloride (Intermediate 184; 453 mg, 3.31 mmol) were stirred in DMF (5 mL) and diisopropylethylamine (1.7 ml, 9.95 mmol) added. The mixture was stirred for 2 hours and then absorbed on to an SCX column, washed with methanol and eluted with ammonia in methanol. Product containing fractions were concentrated and purified by column chromatography (2.5% ammonia in methanol/DCM) to yield the title compound as a yellow foam (396 mg, 68%).

Workup

  1. customabsorbed on to an SCX column
  2. washwashed with methanol
  3. washeluted with ammonia in methanol
  4. additionProduct containing fractions
  5. concentrationwere concentrated
  6. custompurified by column chromatography (2.5% ammonia in methanol/DCM)

Sources & evidence

ORD record
ord-55e2f798c47a411fa4181be1cec3b864
Source dataset
uspto-grants-2010_05
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07709471B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes