Diisopropylethylamine → ((3E)-4-(((1R)-2-(1,1'-biphenyl-4-yl)-1-(methyl-((1R)-1-methylcarbamoyl-2-phenylethyl)-carbamoyl)ethyl)methylcarbamoyl)-1,1-dimethylbut-3-enyl)-carbamic acid tert-butylester

HRID 1601962

Reaction equation

HRID 1601962 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.[C:40]1([C:66]2[CH:71]=[CH:70][CH:69]=[CH:68][CH:67]=2)[CH:45]=[CH:44][C:43]([CH2:46][C@@H:47]([NH:64][CH3:65])[C:48]([N:50]([CH3:63])[C@@H:51]([C:59](=[O:62])[NH:60][CH3:61])[CH2:52][C:53]2[CH:58]=[CH:57][CH:56]=[CH:55][CH:54]=2)=[O:49])=[CH:42][CH:41]=1.C(N(C(C)C)CC)(C)C>C(Cl)Cl>[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:64]([C@@H:47]([C:48](=[O:49])[N:50]([CH3:63])[C@@H:51]([C:59](=[O:62])[NH:60][CH3:61])[CH2:52][C:53]1[CH:54]=[CH:55][CH:56]=[CH:57][CH:58]=1)[CH2:46][C:43]1[CH:42]=[CH:41][C:40]([C:66]2[CH:71]=[CH:70][CH:69]=[CH:68][CH:67]=2)=[CH:45][CH:44]=1)[CH3:65])([CH3:2])([CH3:3])[CH3:4]

Participants

7

Reactant 5

HCID 81531DiisopropylethylamineHCID 181649HOAtHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 10812511(2R)-3-(1,1'-biphenyl-4-yl)-N-methyl-2-methylamino-N-((1R)-1-methylcarbamoyl-2-phenylethyl)propionamideHCID 10847814(2E)-5-(tert-Butyloxycarbonylamino)-5-methylhex-2-enoic acid

Product 1

HCID 10794376((3E)-4-(((1R)-2-(1,1'-biphenyl-4-yl)-1-(methyl-((1R)-1-methylcarbamoyl-2-phenylethyl)-carbamoyl)ethyl)methylcarbamoyl)-1,1-dimethylbut-3-enyl)-carbamic acid tert-butylesterYield 78.9%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

(2E)-5-(tert-Butyloxycarbonylamino)-5-methylhex-2-enoic acid (0.24 g; 0.98 mmol) was dissolved in methylene chloride (10 mL). 1-Hydroxy-7-azabenzotriazole (0.13 g; 0.98 mmol) and N-(3-dimethylaminopropyl)-N'-ethylcarbodiimide hydrochloride (0.2 g; 1.02 mmol) were added and the reaction mixture was stirred for 15 min at room temperature. (2R)-3-(1,1'-Biphenyl-4-yl)-N-methyl-2-methylamino-N-((1R)-1-methylcarbamoyl-2-phenylethyl)propionamide (0.38 g; 0.89 mmol) and diisopropylethylamine (0.17 mL; 0.98 mmol) were added and the reaction mixture was stirred for 12 hours at room temperature. Methylene chloride (50 mL) was added and the reaction mixture was washed with water (50 mL), an aqueous solution of sodium hydrogen sulfate (10%; 50 mL), an aqueous solution of sodium hydrogen carbonate/sodium carbonate (pH 9; 50 mL) and water (50 mL) and dried (magnesium sulfate). The solvent was removed in vacuo and the residue was chromatographed on silica (4×20 cm) using ethyl acetate/heptane (2:1) as eluent to afford 0.46 g of ((3E)4-(((1R)-2-(1,1'-biphenyl-4-yl)-1-(methyl-((1R)-1-methylcarbamoyl-2-phenylethyl)-carbamoyl)ethyl)methylcarbamoyl)-1,1-dimethylbut-3-enyl)-carbamic acid tert-butylester.

Workup

  1. stirringthe reaction mixture was stirred for 12 hours at room temperature
  2. washthe reaction mixture was washed with water (50 mL)
  3. dry with materialan aqueous solution of sodium hydrogen sulfate (10%; 50 mL), an aqueous solution of sodium hydrogen carbonate/sodium carbonate (pH 9; 50 mL) and water (50 mL) and dried (magnesium sulfate)
  4. customThe solvent was removed in vacuo
  5. customthe residue was chromatographed on silica (4×20 cm)

Sources & evidence

ORD record
ord-352fa9b594bd44dc8ccddb9127669143
Source dataset
uspto-grants-1999_11
Patent number
US05977178

Linked notes

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