Diisopropylethylamine → ((3E)-4(N-methyl-N-((1R)-1-(N-methyl-N-((1R)-2-phenyl-1-((2,2,2-trifluoroethyl)carbamoyl)ethyl)carbamoyl)-2-(2-naphthyl)ethyl)carbamoyl)-1,1-dimethylbut-3-enyl)carbamic acid tert-butyl ester

HRID 1602031Notes

Reaction equation

HRID 1602031 reaction equation
[C:1]([O:5][C:6]([NH:8][C:9]([CH3:17])([CH3:16])[CH2:10]/[CH:11]=[CH:12]/[C:13]([OH:15])=O)=[O:7])([CH3:4])([CH3:3])[CH3:2].ON1C2N=CC=CC=2N=N1.Cl.CN(C)CCCN=C=NCC.[CH3:40][NH:41][C@H:42]([CH2:63][C:64]1[CH:73]=[CH:72][C:71]2[C:66](=[CH:67][CH:68]=[CH:69][CH:70]=2)[CH:65]=1)[C:43]([N:45]([CH3:62])[C@@H:46]([C:54](=[O:61])[NH:55][CH2:56][C:57]([F:60])([F:59])[F:58])[CH2:47][C:48]1[CH:53]=[CH:52][CH:51]=[CH:50][CH:49]=1)=[O:44].C(N(C(C)C)C(C)C)C>CN(C)C=O.ClCCl.C(OCC)(=O)C>[C:1]([O:5][C:6](=[O:7])[NH:8][C:9]([CH3:17])([CH3:16])[CH2:10]/[CH:11]=[CH:12]/[C:13](=[O:15])[N:41]([CH3:40])[C@@H:42]([C:43](=[O:44])[N:45]([CH3:62])[C@@H:46]([C:54](=[O:61])[NH:55][CH2:56][C:57]([F:58])([F:59])[F:60])[CH2:47][C:48]1[CH:49]=[CH:50][CH:51]=[CH:52][CH:53]=1)[CH2:63][C:64]1[CH:73]=[CH:72][C:71]2[C:66](=[CH:67][CH:68]=[CH:69][CH:70]=2)[CH:65]=1)([CH3:2])([CH3:3])[CH3:4]

Participants

9

Reactant 5

HCID 81531DiisopropylethylamineHCID 181649HOAtHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 10847814(2E)-5-(tert-Butyloxycarbonylamino)-5-methylhex-2-enoic acidHCID 54363069(2R)-2-methylamino-N-methyl-3-(2-naphthyl)-N-((1R)-2-phenyl-1-((2,2,2-trifluoroethyl) carbamoyl)ethyl)propionamide

Product 1

HCID 59057162((3E)-4(N-methyl-N-((1R)-1-(N-methyl-N-((1R)-2-phenyl-1-((2,2,2-trifluoroethyl)carbamoyl)ethyl)carbamoyl)-2-(2-naphthyl)ethyl)carbamoyl)-1,1-dimethylbut-3-enyl)carbamic acid tert-butyl esterYield 93%

Reagents, catalysts & solvents 3

HCID 6228DimethylformamideSolventHCID 6344DichloromethaneSolvent2×HCID 8857Ethyl AcetateSolvent

Conditions

Temperature
0 °C

Procedure

(2E)-5-(tert-Butoxycarbonylamino)-5-methylhex-2-enoic acid (168 mg, 0.69 mmol) and 1-hydroxy-7-azabenzotriazole (94 mg, 0.69 mmol) were dissolved in N,N-dimethylformamide (3 ml) and dichloromethane (3 ml). The solution was cooled to 0° C. N-(3-Dimethylaminopropyl)-N'-ethylcarbodiimide hydrochloride (132 mg, 0.69 mmol) was added. The reaction mixture was stirred for 15 min at 0° C. A solution of (2R)-2-methylamino-N-methyl-3-(2-naphthyl)-N-((1R)-2-phenyl-1-((2,2,2-trifluoroethyl) carbamoyl)ethyl)propionamide (327 mg, 0.69 mmol) in dichloromethane (3 ml) was added. Ethyldiisopropylamine (0.12 ml, 0.69 mmol) was added. The reaction mixture was stirred for 16 h, while it was warming up to room temperature. It was diluted with ethyl acetate (50 ml) and washed with 10% aqueous sodium hydrogen sulfate solution (50 ml). The aqueous phase was extracted with ethyl acetate (2×20 ml). The combined organic layers were washed with saturated sodium hydrogen carbonate solution (100 ml) and dried over magnesium sulfate. The solvent was removed in vacuo. The crude product was purified by flash chromatography on silica (160 g), using ethyl acetate/heptane 1:1 as eluent to give 447 mg of ((3E)-4-(N-methyl-N-((1R)-1-(N-methyl-N-((1R)-2-phenyl-1-((2,2,2-trifluoroethyl)carbamoyl)ethyl)carbamoyl)-2-(2-naphthyl) ethyl)carbamoyl)-1,1-dimethylbut-3-enyl)carbamic acid tert-butyl ester.

Workup

  1. stirringThe reaction mixture was stirred for 16 h, while it
  2. temperaturewas warming up to room temperature
  3. washwashed with 10% aqueous sodium hydrogen sulfate solution (50 ml)
  4. extractionThe aqueous phase was extracted with ethyl acetate (2×20 ml)
  5. washThe combined organic layers were washed with saturated sodium hydrogen carbonate solution (100 ml)
  6. dry with materialdried over magnesium sulfate
  7. customThe solvent was removed in vacuo
  8. customThe crude product was purified by flash chromatography on silica (160 g)

Sources & evidence

ORD record
ord-6ecbaee670484619983c114a214dc439
Source dataset
uspto-grants-1999_11
Patent number
US05977178

Reaction notes

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