Toluene → (3R,4R)-benzyl 3-(((2S,6R)-N-((R)-1-(1-benzyl-3-(2,5-difluorophenyl)-1H-1,2,4-triazol-5-yl)-2,2-dimethylpropyl)-2,6-dimethylmorpholine-4-carboxamido)methyl)-4-fluoropyrrolidine-1-carboxylate

HRID 1037486Notes

Reaction equation

[F:1][C:2]1[CH:7]=[CH:6][C:5]([F:8])=[CH:4][C:3]=1[C:9]1[N:13]=[C:12]([C@H:14]([NH:19][CH2:20][C@H:21]2[C@@H:25]([F:26])[CH2:24][N:23]([C:27]([O:29][CH2:30][C:31]3[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=3)=[O:28])[CH2:22]2)[C:15]([CH3:18])([CH3:17])[CH3:16])[N:11]([CH2:37][C:38]2[CH:43]=[CH:42][CH:41]=[C:40](F)[CH:39]=2)[N:10]=1.C(N(CC)CC)C.C(Cl)(Cl)=[O:53].C1(C)C=CC=CC=1.C(N1C([C@H:75]([N:80]([CH2:84][C@H:85]2[C@@H:89](F)CN(C(OCC3C=CC=CC=3)=O)C2)[C:81](Cl)=[O:82])[C:76](C)(C)[CH3:77])=NC(C2C=C(F)C=CC=2F)=N1)C1C=CC=CC=1.CC1OC(C)CNC1>ClCCl>[CH2:37]([N:11]1[C:12]([C@H:14]([N:19]([CH2:20][C@H:21]2[C@@H:25]([F:26])[CH2:24][N:23]([C:27]([O:29][CH2:30][C:31]3[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=3)=[O:28])[CH2:22]2)[C:81]([N:80]2[CH2:84][C@@H:85]([CH3:89])[O:53][C@@H:76]([CH3:77])[CH2:75]2)=[O:82])[C:15]([CH3:18])([CH3:16])[CH3:17])=[N:13][C:9]([C:3]2[CH:4]=[C:5]([F:8])[CH:6]=[CH:7][C:2]=2[F:1])=[N:10]1)[C:38]1[CH:39]=[CH:40][CH:41]=[CH:42][CH:43]=1

Participants

Conditions

Temperature: 40 °C

Procedure

To a solution of (3R,4R)-benzyl 3-(((R)-1-(3-(2,5-difluorophenyl)-1-(3-fluorobenzyl)-1H-1,2,4-triazol-5-yl)-2,2-dimethylpropylamino)methyl)-4-fluoropyrrolidine-1-carboxylate (110 mg, 0.186 mmol) in dichloromethane (1.9 mL, 0.1 M solution) was added triethylamine (78 μL, 0.558 mmol) followed by addition of 20% phosgene in toluene (66 mg, 0.223 mmol) at room temperature. After the resulting solution was stirred at room temperature for 15 min (LC/MS (uplc): MH+654.3, 1.37 min for (3S,4R)-benzyl 3-((((R)-1-(1-benzyl-3-(2,5-difluorophenyl)-1H-1,2,4-triazol-5-yl)-2,2-dimethylpropyl)(chlorocarbonyl)amino)methyl)-4-fluoropyrrolidine-1-carboxylate), 2,6-dimethylmorpholine (64 mg, 0.558 mmol) was added and heat at 40° C. for overnight (in a seal tube). The reaction mixture was quenched with H2O and extracted with EtOAc. The organic layer was washed with NaHCO3 solution and brine, dried over anhydrous sodium sulfate, filtered and concentrated. After the volatile organic materials were removed in vacuo, the crude product was purified on preparative reverse phase HPLC. The combined fractions of the product were neutralized with saturated NaHCO3 solution, which was then extracted with EtOAc. The organic layer was dried over anhydrous sodium sulfate, filtered and concentrated in vacuo to yield the desired (3R,4R)-benzyl 3-(((2S,6R)—N—((R)-1-(1-benzyl-3-(2,5-difluorophenyl)-1H-1,2,4-triazol-5-yl)-2,2-dimethylpropyl)-2,6-dimethylmorpholine-4-carboxamido)methyl)-4-fluoropyrrolidine-1-carboxylate (91 mg, 66.7%, over 2 steps). LC/MS (uplc): MH+733.5, 1.41 min.

Workup

additionwas added
customThe reaction mixture was quenched with H2O
extractionextracted with EtOAc
washThe organic layer was washed with NaHCO3 solution and brine
dry with materialdried over anhydrous sodium sulfate
filtrationfiltered
concentrationconcentrated
customAfter the volatile organic materials were removed in vacuo
customthe crude product was purified on preparative reverse phase HPLC
extractionwas then extracted with EtOAc
dry with materialThe organic layer was dried over anhydrous sodium sulfate
filtrationfiltered
concentrationconcentrated in vacuo

Sources & evidence

ORD record: ord-9d45bfdb723e477ba82a5a83b6ee9bc5
Source dataset: uspto-grants-2013_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08546434B2

Reaction notes

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