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Triethylamine → 2-(Difluoromethyl)-N-[(1S,2S)-2-{[5-(trifluoromethyl)pyrazin-2-yl]amino}cyclopentyl]benzamide

HRID 1750632
Notes
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Reaction equation

HRID 1750632 reaction equation
Cl.[F:2][C:3]([F:18])([F:17])[C:4]1[N:5]=[CH:6][C:7]([NH:10][C@H:11]2[CH2:15][CH2:14][CH2:13][C@@H:12]2[NH2:16])=[N:8][CH:9]=1.[F:19][CH:20]([F:30])[C:21]1[CH:29]=[CH:28][CH:27]=[CH:26][C:22]=1[C:23](O)=[O:24].C(N(CC)CC)C.O1POPOP1>C(Cl)Cl>[F:19][CH:20]([F:30])[C:21]1[CH:29]=[CH:28][CH:27]=[CH:26][C:22]=1[C:23]([NH:16][C@H:12]1[CH2:13][CH2:14][CH2:15][C@@H:11]1[NH:10][C:7]1[CH:6]=[N:5][C:4]([C:3]([F:2])([F:17])[F:18])=[CH:9][N:8]=1)=[O:24]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 8471TriethylamineHCID 114992922-(difluoromethyl)benzoic AcidHCID 203981951,3,5,2,4,6-Trioxatriphosphinane2×HCID 118308118(1S,2S)-1-N-[5-(Trifluoromethyl)pyrazin-2-yl]cyclopentane-1,2-diamine hydrochloride2×

Product 1

HCID 1183081232-(Difluoromethyl)-N-[(1S,2S)-2-{[5-(trifluoromethyl)pyrazin-2-yl]amino}cyclopentyl]benzamide

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of (1S,2S)-1-N-[5-(trifluoromethyl)pyrazin-2-yl]cyclopentane-1,2-diamine hydrochloride (Intermediate 14; 100 mg, 0.35 mmol), 2-(difluoromethyl)benzoic acid (CAS number 799814-32-7; 61 mg, 0.35 mmol) and triethylamine (0.148 ml, 1.06 mmol) in DCM (2 ml) was added 1,3,5,2,4,6-trioxatriphosphorinane, 2,4,6-tripropyl-, 2,4,6-trioxide (CAS number 68957-94-8; 50% in ethyl acetate, 0.417 ml, 0.71 mmol). The reaction mixture was stirred at room temperature for 3 hours. To this was then added further 1,3,5,2,4,6-trioxatriphosphorinane, 2,4,6-tripropyl-, 2,4,6-trioxide (CAS number 68957-94-8; 50% in ethyl acetate, 0.417 ml, 0.71 mmol) and stirred at room temperature overnight. The reaction was partitioned between DCM and a saturated solution of sodium bicarbonate, filtered through a hydrophobic frit and concentrated in vacuo. The resulting residue was purified by column chromatography (silica, 0-100% ethyl acetate/petrol) and then triturated with diethyl ether to afford the title compound.

Workup

  1. stirringstirred at room temperature overnight
  2. customThe reaction was partitioned between DCM
  3. filtrationa saturated solution of sodium bicarbonate, filtered through a hydrophobic frit
  4. concentrationconcentrated in vacuo
  5. customThe resulting residue was purified by column chromatography (silica, 0-100% ethyl acetate/petrol)
  6. customtriturated with diethyl ether

Sources & evidence

ORD record
ord-e5ba45e7dbb24e24b55ed3e03b6ba32e
Source dataset
uspto-grants-2015_10
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09156829B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes