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

HRID 1845458Notes

Reaction equation

HRID 1845458 reaction equation
[Cl:1][C:2]1[CH:3]=[N:4][N:5]([CH3:17])[C:6]=1[C:7]1[CH:8]=[C:9]([C:14]([OH:16])=O)[S:10][C:11]=1[CH2:12][CH3:13].C(N(CC)C(C)C)(C)C.[NH2:27][C@@H:28]([CH2:41][C:42]1[CH:47]=[CH:46][CH:45]=[CH:44][C:43]=1[C:48]([F:51])([F:50])[F:49])[CH2:29][N:30]1[C:38](=[O:39])[C:37]2[C:32](=[CH:33][CH:34]=[CH:35][CH:36]=2)[C:31]1=[O:40].F[P-](F)(F)(F)(F)F.Br[P+](N1CCCC1)(N1CCCC1)N1CCCC1>C(Cl)Cl>[Cl:1][C:2]1[CH:3]=[N:4][N:5]([CH3:17])[C:6]=1[C:7]1[CH:8]=[C:9]([C:14]([NH:27][C@@H:28]([CH2:41][C:42]2[CH:47]=[CH:46][CH:45]=[CH:44][C:43]=2[C:48]([F:51])([F:49])[F:50])[CH2:29][N:30]2[C:38](=[O:39])[C:37]3[C:32](=[CH:33][CH:34]=[CH:35][CH:36]=3)[C:31]2=[O:40])=[O:16])[S:10][C:11]=1[CH2:12][CH3:13]

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 2733179PyBroPHCID 578268082-{(2S)-2-amino-3-[2-(trifluoromethyl)phenyl]propyl}-1H-isoindole-1,3(2H)-dioneHCID 578268684-(4-chloro-1-methyl-1H-pyrazol-5-yl)-5-ethyl-2-thiophenecarboxylic acid

Product 1

HCID 578267994-(4-chloro-1-methyl-1H-pyrazol-5-yl)-N-((1S)-2-(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)-1-{[2-(trifluoromethyl)phenyl]methyl}ethyl)-5-ethyl-2-thiophenecarboxamideYield 71.1%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Conditions

Temperature
25 °C

Procedure

To a solution of 4-(4-chloro-1-methyl-1H-pyrazol-5-yl)-5-ethyl-2-thiophenecarboxylic acid (200 mg, 0.74 mmol), N,N-diisopropylethylamine (0.64 ml, 3.69 mmol) and 2-{(2S)-2-amino-3-[2-(trifluoromethyl)phenyl]propyl}-1H-isoindole-1,3(2H)-dione (284 mg, 0.74 mmol) [prepared according to Preparation 6] in DCM at 25° C. was added bromo-tris-pyrrolidino-phosphonium hexafluorophosphate (414 mg, 0.886 mmol) in one portion. The solution stirred at 25° C. for 1 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 4-(4-chloro-1-methyl-1H-pyrazol-5-yl)-N-((1S)-2-(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)-1-{[2-(trifluoromethyl)phenyl]methyl}ethyl)-5-ethyl-2-thiophenecarboxamide (316 mg, 0.526 mmol, 71% yield) as a white foam: LCMS (ES) m/e 601, 603 (M, M+2)+.

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-63286d7a93d54850bf18cb5d6b172e32
Source dataset
uspto-grants-2015_02
Patent number
US08946278B2

Reaction notes

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