Diisopropylethylamine → HCID 21310212, compound

HRID 650842Notes

Reaction equation

HRID 650842 reaction equation
[C:1]([O:5][C:6]([N:8]([C@H:10]([CH2:14][C:15]1[CH:24]=[CH:23][C:22]2[C:17](=[CH:18][CH:19]=[CH:20][CH:21]=2)[CH:16]=1)[C:11](O)=[O:12])[CH3:9])=[O:7])([CH3:4])([CH3:3])[CH3:2].ON1C2N=CC=CC=2N=N1.Cl.C(N=C=NCCCN(C)C)C.[CH2:47]([N:54]([C:56]([NH:58][CH2:59][CH3:60])=[O:57])[NH2:55])[C:48]1[CH:53]=[CH:52][CH:51]=[CH:50][CH:49]=1.C(N(C(C)C)CC)(C)C>ClCCl>[CH2:47]([N:54]([C:56]([NH:58][CH2:59][CH3:60])=[O:57])[NH:55][C:11](=[O:12])[C@H:10]([N:8]([C:6]([O:5][C:1]([CH3:3])([CH3:2])[CH3:4])=[O:7])[CH3:9])[CH2:14][C:15]1[CH:24]=[CH:23][C:22]2[C:17](=[CH:18][CH:19]=[CH:20][CH:21]=2)[CH:16]=1)[C:48]1[CH:53]=[CH:52][CH:51]=[CH:50][CH:49]=1

Participants

7

Reactant 5

HCID 81531DiisopropylethylamineHCID 181649HOAtHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 10065151(2R)-2-[methyl-[(2-methylpropan-2-yl)oxycarbonyl]amino]-3-naphthalen-2-ylpropanoic acidHCID 21712328HCID 21712328, compound

Product 1

HCID 21310212HCID 21310212, compoundYield 90.1%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

To a solution of (2R)-2-(N-tert-butoxycarbonyl-N-methylamino)-3-(2-naphthyl)propionic acid (2.6 g, 7.9 mmol) in dichloromethane (20 ml) was added 1-hydroxy-7-azabenzotriazole (1.1 g, 8.0 mmol) and 1-ethyl-3-dimethylaminopropyl carbodiimide hydrochloride (1.6 g, 8.6 mmol) and the -mixture was stirred at 30 min at room temperature. Then 2-benzyl-4-ethylsemicarbazide (1.3 g, 6.6 mmol) and diisopropylethylamine (1.5 ml, 8.6 mmol) in dichloromethane (20 ml) were added and the mixture was stirred overnight. The mixture was washed with saturated sodium bicarbonate (2×50 ml), dried (magnesium sulfate) and concentrated in vacuo. The obtained product was chromatographed on silica (100 g) with petrol ether/ethyl acetate 1:1 to give 3.0 g (90%) of 2-benzyl-1-[(2R)-2-(N-(tert-butoxycarbonyl)-N-methylamino)-3-(2-naphtyl)propionyl]4-ethylsemicarbazide.

Workup

  1. stirringthe mixture was stirred overnight
  2. washThe mixture was washed with saturated sodium bicarbonate (2×50 ml)
  3. dry with materialdried (magnesium sulfate)
  4. concentrationconcentrated in vacuo
  5. customThe obtained product was chromatographed on silica (100 g) with petrol ether/ethyl acetate 1:1

Sources & evidence

ORD record
ord-8bffab19adff41e5bad31a4624670515
Source dataset
uspto-grants-2001_08
Patent number
US06274584B1

Reaction notes

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