Diisopropylethylamine → (R)-2-(4-(4-chlorobenzyl)-5-(trifluoromethyl)-4H-1,2,4-triazol-3-yl)-N-((S)-7-(trifluoromethyl)chroman-4-yl)pyrrolidine-1-carboxamide

HRID 2063464Notes

Reaction equation

HRID 2063464 reaction equation
Cl[C:2](Cl)([O:4]C(=O)OC(Cl)(Cl)Cl)Cl.[F:13][C:14]([F:27])([F:26])[C:15]1[CH:24]=[C:23]2[C:18]([C@@H:19]([NH2:25])[CH2:20][CH2:21][O:22]2)=[CH:17][CH:16]=1.C(N(CC)C(C)C)(C)C.Cl.[Cl:38][C:39]1[CH:59]=[CH:58][C:42]([CH2:43][N:44]2[C:48]([C:49]([F:52])([F:51])[F:50])=[N:47][N:46]=[C:45]2[C@H:53]2[CH2:57][CH2:56][CH2:55][NH:54]2)=[CH:41][CH:40]=1.C([O-])(O)=O.[Na+]>C(Cl)Cl.[Cl-].[Na+].O>[Cl:38][C:39]1[CH:59]=[CH:58][C:42]([CH2:43][N:44]2[C:48]([C:49]([F:52])([F:51])[F:50])=[N:47][N:46]=[C:45]2[C@H:53]2[CH2:57][CH2:56][CH2:55][N:54]2[C:2]([NH:25][C@@H:19]2[C:18]3[C:23](=[CH:24][C:15]([C:14]([F:13])([F:26])[F:27])=[CH:16][CH:17]=3)[O:22][CH2:21][CH2:20]2)=[O:4])=[CH:41][CH:40]=1

Participants

8

Reactant 5

HCID 81531Diisopropylethylamine2×HCID 94429TriphosgeneHCID 516892Sodium BicarbonateHCID 46911908(S)-7-(trifluoromethyl)chroman-4-amineHCID 68812824(R)-4-(4-chlorobenzyl)-3-(pyrrolidin-2-yl)-5-(trifluoromethyl)-4H-1,2,4-triazole HCl salt

Product 1

HCID 57650262(R)-2-(4-(4-chlorobenzyl)-5-(trifluoromethyl)-4H-1,2,4-triazol-3-yl)-N-((S)-7-(trifluoromethyl)chroman-4-yl)pyrrolidine-1-carboxamideYield 216.1%

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolvent3×HCID 57417360Sodium chloride; waterSolvent

Conditions

Temperature
0 °C

Procedure

To a stirring solution of triphosgene (14.87 mg, 0.05 mmol) in 8 mL of CH2Cl2 at 0° C. was added dropwise a mixed solution of (S)-7-(trifluoromethyl)chroman-4-amine (32.58 mg, 0.15 mmol) and N,N-diisopropylethylamine (0.07841 mL, 0.45 mmol) in dichloromethane (2 mL). The reaction mixture was stirred at 0° C. for 30 minutes. Then to the mixture at 0° C. was added a solution of the (R)-4-(4-chlorobenzyl)-3-(pyrrolidin-2-yl)-5-(trifluoromethyl)-4H-1,2,4-triazole HCl salt (55.09 mg, 0.15 mmol) and N,N-diisopropylethylamine (0.07841 mL, 0.45 mmol) in dichloromethane (2 mL) slowly. The resulting mixture was stirred 0° C. for 30 minutes, then at room temperature overnight. The reaction mixture was treated with sat. aqueous NaHCO3 (10 mL) and brine, dried over Na2SO4, and concentrated in vacuo. Flash chromatography purification (Hex/EtOAc gradient, 10-100% EtOAc) afforded the desired product as white foam (62 mg, 72.0%).

Workup

  1. stirringThe resulting mixture was stirred 0° C. for 30 minutes
  2. customat room temperature
  3. customovernight
  4. dry with materialdried over Na2SO4
  5. concentrationconcentrated in vacuo
  6. customFlash chromatography purification (Hex/EtOAc gradient, 10-100% EtOAc)

Sources & evidence

ORD record
ord-6206e4d2e94342bb8199e51084cd6be0
Source dataset
uspto-grants-2012_10
Patent number
US08288371B2

Reaction notes

Loading…