Diisopropylethylamine → N-((1S)-2-(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)-1-{[2-(trifluoromethyl)phenyl]methyl}ethyl)-5-ethyl-4-(1-methyl-1H-pyrazol-5-yl)-2-thiophenecarboxamide

HRID 1845450Notes

Reaction equation

HRID 1845450 reaction equation
[CH2:1]([C:3]1[S:7][C:6]([C:8]([OH:10])=O)=[CH:5][C:4]=1[C:11]1[N:15]([CH3:16])[N:14]=[CH:13][CH:12]=1)[CH3:2].[NH2:17][C@@H:18]([CH2:31][C:32]1[CH:37]=[CH:36][CH:35]=[CH:34][C:33]=1[C:38]([F:41])([F:40])[F:39])[CH2:19][N:20]1[C:28](=[O:29])[C:27]2[C:22](=[CH:23][CH:24]=[CH:25][CH:26]=2)[C:21]1=[O:30].C(N(C(C)C)CC)(C)C.F[P-](F)(F)(F)(F)F.Br[P+](N1CCCC1)(N1CCCC1)N1CCCC1>C(Cl)Cl>[O:29]=[C:28]1[C:27]2[C:22](=[CH:23][CH:24]=[CH:25][CH:26]=2)[C:21](=[O:30])[N:20]1[CH2:19][C@@H:18]([NH:17][C:8]([C:6]1[S:7][C:3]([CH2:1][CH3:2])=[C:4]([C:11]2[N:15]([CH3:16])[N:14]=[CH:13][CH:12]=2)[CH:5]=1)=[O:10])[CH2:31][C:32]1[CH:37]=[CH:36][CH:35]=[CH:34][C:33]=1[C:38]([F:40])([F:39])[F:41]

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 2733179PyBroPHCID 578267485-ethyl-4-(1-methyl-1H-pyrazol-5-yl)-2-thiophenecarboxylic acidHCID 578268082-{(2S)-2-amino-3-[2-(trifluoromethyl)phenyl]propyl}-1H-isoindole-1,3(2H)-dione

Product 1

HCID 57826840N-((1S)-2-(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)-1-{[2-(trifluoromethyl)phenyl]methyl}ethyl)-5-ethyl-4-(1-methyl-1H-pyrazol-5-yl)-2-thiophenecarboxamideYield 71.7%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Conditions

Temperature
25 °C

Procedure

To a solution of 5-ethyl-4-(1-methyl-1H-pyrazol-5-yl)-2-thiophenecarboxylic acid (283 mg, 1.2 mmol), 2-{(2S)-2-amino-3-[2-(trifluoromethyl)phenyl]propyl}-1H-isoindole-1,3(2H)-dione (461 mg, 1.2 mmol) [prepared according to Preparation 6] and diisopropylethylamine (1.043 ml, 5.99 mmol) in DCM at 25° C. was added bromo-tris-pyrrolidino-phosphonium hexafluorophosphate (615 mg, 1.317 mmol) in one portion. The solution was stirred at 25° C. over 12 h and was then partitioned between H2O-DCM. The aqueous phase was washed several times with DCM and the combined organic fractions were dried over Na2SO4, concentrated and purified via column chromatography (silica, 50% EtOAc in hexanes) yielding N-((1S)-2-(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)-1-{[2-(trifluoromethyl)phenyl]methyl}ethyl)-5-ethyl-4-(1-methyl-1H-pyrazol-5-yl)-2-thiophenecarboxamide (486 mg, 0.86 mmol, 71.6% yield) as a clear oil: LCMS (ES) m/e 567 (M+H)+.

Workup

  1. customwas then partitioned between H2O-DCM
  2. washThe aqueous phase was washed several times with DCM
  3. dry with materialthe combined organic fractions were dried over Na2SO4
  4. concentrationconcentrated
  5. custompurified via column chromatography (silica, 50% EtOAc in hexanes)

Sources & evidence

ORD record
ord-52cc74031fbb4789920582dcdddd4e14
Source dataset
uspto-grants-2015_02
Patent number
US08946278B2

Reaction notes

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