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

HRID 1961153Notes

Reaction equation

HRID 1961153 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][C:12]=1[CH2:17][CH3:18])[CH3:2].[NH2:19][C@@H:20]([CH2:33][C:34]1[CH:39]=[CH:38][CH:37]=[CH:36][C:35]=1[C:40]([F:43])([F:42])[F:41])[CH2:21][N:22]1[C:30](=[O:31])[C:29]2[C:24](=[CH:25][CH:26]=[CH:27][CH:28]=2)[C:23]1=[O:32].C(N(CC)C(C)C)(C)C.F[P-](F)(F)(F)(F)F.Br[P+](N1CCCC1)(N1CCCC1)N1CCCC1>ClCCl>[O:31]=[C:30]1[C:29]2[C:24](=[CH:25][CH:26]=[CH:27][CH:28]=2)[C:23](=[O:32])[N:22]1[CH2:21][C@@H:20]([NH:19][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][C:12]=2[CH2:17][CH3:18])[CH:5]=1)=[O:10])[CH2:33][C:34]1[CH:39]=[CH:38][CH:37]=[CH:36][C:35]=1[C:40]([F:42])([F:41])[F:43]

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 2733179PyBroPHCID 578266445-ethyl-4-(4-ethyl-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 57826582N-((1S)-2-(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)-1-{[2-(trifluoromethyl)phenyl]methyl}ethyl)-5-ethyl-4-(4-ethyl-1-methyl-1H-pyrazol-5-yl)-2-thiophenecarboxamideYield 57.6%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Conditions

Temperature
25 °C

Procedure

To a solution of 5-ethyl-4-(4-ethyl-1-methyl-1H-pyrazol-5-yl)-2-thiophenecarboxylic acid (175 mg, 0.66 mmol), 2-{(2S)-2-amino-3-[2-(trifluoromethyl)phenyl]propyl}-1H-isoindole-1,3(2H)-dione (255 mg, 0.66 mmol)[prepared according to Procedure 6] and N,N-diisopropylethylamine (0.58 ml, 3.31 mmol) in Dichloromethane (4.6 ml) at 25° C. was added bromo-tris-pyrrolidino-phosphonium hexafluorophosphate (340 mg, 0.73 mmol) in one portion. The solution stirred at 25° C. for 1 h and was then dry loaded onto silica and purified via column chromatography (silica, 30-70% 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-(4-ethyl-1-methyl-1H-pyrazol-5-yl)-2-thiophenecarboxamide (232 mg, 0.38 mmol, 57% yield) as a clear oil: LCMS (ES) m/e 595 (M+H)+.

Workup

  1. customwas then dry
  2. custompurified via column chromatography (silica, 30-70% EtOAc in hexanes)

Sources & evidence

ORD record
ord-f67f6e6f7bb54c98b1234a4f3572a312
Source dataset
uspto-grants-2013_04
Patent number
US08410158B2

Reaction notes

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