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Tripropylamine → 5-(tert-Butoxycarbonylamino-methyl)-2-methyl-1H-indole-3-carboxylic Acid Benzyl Ester

HRID 966534
Notes
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Reaction equation

HRID 966534 reaction equation
[CH2:1]([O:8][C:9](=[O:30])/[CH:10]=[C:11](/[NH:13][C:14]1[CH:19]=[CH:18][C:17]([CH2:20][NH:21][C:22]([O:24][C:25]([CH3:28])([CH3:27])[CH3:26])=[O:23])=[CH:16][C:15]=1I)\[CH3:12])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C(N(CCC)CCC)CC>CN(C=O)C.C([O-])(=O)C.[Pd+2].C([O-])(=O)C>[CH2:1]([O:8][C:9]([C:10]1[C:19]2[C:14](=[CH:15][CH:16]=[C:17]([CH2:20][NH:21][C:22]([O:24][C:25]([CH3:28])([CH3:27])[CH3:26])=[O:23])[CH:18]=2)[NH:13][C:11]=1[CH3:12])=[O:30])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 2

HCID 7616TripropylamineHCID 23393855(E)-3-[4-(tert-Butoxycarbonylamino-methyl)-2-iodo-phenylamino]-but-2-enoic Acid Benzyl Ester

Product 1

HCID 102940355-(tert-Butoxycarbonylamino-methyl)-2-methyl-1H-indole-3-carboxylic Acid Benzyl EsterYield 48.2%

Reagents, catalysts & solvents 2

HCID 167845palladium(II) acetateCatalyst
HCID 6228
Dimethylformamide
Solvent

Conditions

Temperature
120 °C

Procedure

To a mixture of (E)-3-[4-(tert-butoxycarbonylamino-methyl)-2-iodo-phenylamino]-but-2-enoic acid benzyl ester (5.25 g, 10 mmol) and tripropylamine (1.9 mL, 10 mmol) in DMF (10 mL) was added palladium acetate (112 mg, 0.5 mmol). The mixture was stirred at 120° C. for 1 hour and then partitioned between ethyl acetate and water. The organic phase was washed with water and brine, dried over Na2SO4 and filtered. The filtrate was concentrated in vacuo to give a residue, which was recrystallized from ethyl acetate and hexanes to give 1.9 g (48%) of the desired product as a yellowish solid: MS(APCI−): m/z 393.1.4 (M−H).

Workup

  1. custompartitioned between ethyl acetate and water
  2. washThe organic phase was washed with water and brine
  3. dry with materialdried over Na2SO4
  4. filtrationfiltered
  5. concentrationThe filtrate was concentrated in vacuo
  6. customto give a residue, which
  7. customwas recrystallized from ethyl acetate and hexanes

Sources & evidence

ORD record
ord-a66721ec5b0d4e5bbbe1a4f65f94328c
Source dataset
uspto-grants-2005_10
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US06951848B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes