Triethylamine → benzyl (3R)-4-(3-cyanophenoxy)-3-[4-(1-t-butoxycarbonyl-4-piperidyloxy)benzoylamino]butyrate

HRID 747707Notes

Reaction equation

HRID 747707 reaction equation
C(O[C:6]([NH:8][C@@H:9]([CH2:21][O:22][C:23]1[CH:28]=[CH:27][CH:26]=[C:25]([C:29]#[N:30])[CH:24]=1)[CH2:10][C:11]([O:13][CH2:14][C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1)=[O:12])=[O:7])(C)(C)C.[C:31]([O:35][C:36]([N:38]1[CH2:43][CH2:42][CH:41]([O:44][C:45]2[CH:53]=[CH:52][C:48](C(O)=O)=[CH:47][CH:46]=2)[CH2:40][CH2:39]1)=[O:37])([CH3:34])([CH3:33])[CH3:32].C(N(CC)CC)C.Cl.CN(C)CCCN=C=NCC.ON1C2C=CC=CC=2N=N1>Cl.O1CCOCC1.O1CCOCC1.O>[C:29]([C:25]1[CH:24]=[C:23]([CH:28]=[CH:27][CH:26]=1)[O:22][CH2:21][C@H:9]([NH:8][C:6](=[O:7])[C:48]1[CH:47]=[CH:46][C:45]([O:44][CH:41]2[CH2:40][CH2:39][N:38]([C:36]([O:35][C:31]([CH3:34])([CH3:33])[CH3:32])=[O:37])[CH2:43][CH2:42]2)=[CH:53][CH:52]=1)[CH2:10][C:11]([O:13][CH2:14][C:15]1[CH:16]=[CH:17][CH:18]=[CH:19][CH:20]=1)=[O:12])#[N:30]

Participants

9

Reactant 5

HCID 8471TriethylamineHCID 757711-HydroxybenzotriazoleHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 27946494-{[1-(tert-Butoxycarbonyl)piperidin-4-yl]oxy}benzoic acidHCID 10960575benzyl (3R)-3-t-butoxycarbonylamino-4-(3-cyanophenoxy)butyrate

Product 1

HCID 86760706benzyl (3R)-4-(3-cyanophenoxy)-3-[4-(1-t-butoxycarbonyl-4-piperidyloxy)benzoylamino]butyrate

Reagents, catalysts & solvents 3

HCID 962WaterSolventHCID 312751,4-DioxaneSolventHCID 204431481,4-Dioxane hydrochlorideSolvent

Procedure

1.46 g (3.56 mmol) of benzyl (3R)-3-(t-butoxycarbonyl)amino-4-(3-cyanophenoxy)butyrate was dissolved in 10 ml of 4 N dioxane hydrochloride and 5 ml of dioxane, and the solution was stirred for 15 hours. The solvent was evaporated, and the residue was dissolved in 20 ml of dichloromethane. 1.14 g (3.56 mmol) of 4-(1-t-butoxycarbonyl-4-piperidyloxy)benzoic acid, 2.48 ml (17.8 mmol) of triethylamine, 748 mg (3.92 mmol) of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride and 529 mg (3.92 mmol) of 1-hydroxybenzotriazole were added to the solution, and they were stirred for 16 hours. The reaction liquid was diluted with water. After the extraction with ethyl acetate, the organic layer was successively washed with water, 1 N sodium hydroxide and saturated aqueous NaCl solution, and then dried over anhydrous magnesium sulfate. The solvent was evaporated, and the residue was treated by the silica gel column chromatography to obtain the title compound.

Workup

  1. customThe solvent was evaporated
  2. dissolutionthe residue was dissolved in 20 ml of dichloromethane
  3. customThe reaction liquid
  4. extractionAfter the extraction with ethyl acetate
  5. washthe organic layer was successively washed with water, 1 N sodium hydroxide and saturated aqueous NaCl solution
  6. dry with materialdried over anhydrous magnesium sulfate
  7. customThe solvent was evaporated
  8. additionthe residue was treated by the silica gel column chromatography

Sources & evidence

ORD record
ord-e995f61667c9411aa4fbf03ee1233b57
Source dataset
uspto-grants-2008_07
Patent number
US07396844B1

Reaction notes

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