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

HRID 1961252Notes

Reaction equation

HRID 1961252 reaction equation
[Cl:1][C:2]1[S:6][C:5]([C:7]([OH:9])=O)=[CH:4][C:3]=1[C:10]1[N:14]([CH3:15])[N:13]=[CH:12][C:11]=1[CH3:16].[NH2:17][C@@H:18]([CH2:31][C:32]1[CH:37]=[C:36]([F:38])[CH:35]=[CH:34][C:33]=1[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].FC1C=CC=C(F)C=1C[C@@H](C(O)=O)N.C1CN([P+](Br)(N2CCCC2)N2CCCC2)CC1.F[P-](F)(F)(F)(F)F.CCN(C(C)C)C(C)C>C(Cl)(Cl)Cl>[Cl:1][C:2]1[S:6][C:5]([C:7]([NH:17][C@H:18]([CH2:19][N:20]2[C:28](=[O:29])[C:27]3[C:22](=[CH:23][CH:24]=[CH:25][CH:26]=3)[C:21]2=[O:30])[CH2:31][C:32]2[CH:37]=[C:36]([F:38])[CH:35]=[CH:34][C:33]=2[F:39])=[O:9])=[CH:4][C:3]=1[C:10]1[N:14]([CH3:15])[N:13]=[CH:12][C:11]=1[CH3:16]

Participants

7

Reactant 5

HCID 81531DiisopropylethylamineHCID 7163042,6-Difluoro-l-phenylalanineHCID 2733179PyBroPHCID 578264495-chloro-4-(1,4-dimethyl-1H-pyrazol-5-yl)-2-thiophenecarboxylic AcidHCID 670660702-[(2S)-2-amino-3-(2,5-difluorophenyl)propyl]-1H-isoindole-1,3(2H)-dione

Product 1

HCID 578268735-chloro-N-{(1S)-2-(2,5-difluorophenyl)-1-[(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)methyl]ethyl}-4-(1,4-dimethyl-1H-pyrazol-5-yl)-2-thiophenecarboxamideYield 35.1%

Reagents, catalysts & solvents 1

HCID 6212ChloroformSolvent

Procedure

To a 50 mL round-bottomed flask was added 5-chloro-4-(1,4-dimethyl-1H-pyrazol-5-yl)-2-thiophenecarboxylic acid (96 mg, 0.37 mmol), 2-[(2S)-2-amino-3-(2,5-difluorophenyl)propyl]-1H-isoindole-1,3(2H)-dione (125 mg, 0.40 mmol) [prepared according to the procedure of Preparation 18 except substituting 2,5-difluoro-L-phenylalanine (3.02 g, 15.0 mmol) for 2,6-difluoro-L-phenylalanine] and PyBrop (225 mg, 0.48 mmol) in chloroform (4 mL). DIEA (330 μL, 1.89 mmol) was added and the reaction stirred overnight at room temperature. The mixture was adsorbed onto silica and purified via column chromatography (25-70% EtOAc/Hex) affording the title compound (98 mg, 0.13 mmol, 34%): LC-MS (ES) m/z=535 (M+H)+.

Workup

  1. customprepared
  2. customaccording to the procedure of Preparation 18
  3. custompurified via column chromatography (25-70% EtOAc/Hex)

Sources & evidence

ORD record
ord-4179285db020452e8ececeb247f9385f
Source dataset
uspto-grants-2013_04
Patent number
US08410158B2

Reaction notes

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