Water → HCID 69404092, compound

HRID 1797650Notes

Reaction equation

HRID 1797650 reaction equation
[CH:1]1[C:13]2[CH:12]([CH2:14][O:15][C:16](=[O:42])[NH:17][CH2:18][C:19]3[N:20]([CH2:38][CH:39]([CH3:41])[CH3:40])[C:21](=[O:37])[C:22]4[C:27]([C:28]=3[O:29][CH2:30][CH2:31][CH2:32][CH3:33])=[CH:26][C:25]([C:34]([NH2:36])=[S:35])=[CH:24][CH:23]=4)[C:11]3[C:6](=[CH:7][CH:8]=[CH:9][CH:10]=3)[C:5]=2[CH:4]=[CH:3][CH:2]=1.Br[CH2:44][C:45](=O)[C:46]([O:48][CH2:49][CH3:50])=[O:47].O>C(O)C>[CH2:30]([O:29][C:28]1[C:27]2[C:22](=[CH:23][CH:24]=[C:25]([C:34]3[S:35][CH:44]=[C:45]([C:46]([O:48][CH2:49][CH3:50])=[O:47])[N:36]=3)[CH:26]=2)[C:21](=[O:37])[N:20]([CH2:38][CH:39]([CH3:41])[CH3:40])[C:19]=1[CH2:18][NH:17][C:16]([O:15][CH2:14][CH:12]1[C:11]2[CH:10]=[CH:9][CH:8]=[CH:7][C:6]=2[C:5]2[C:13]1=[CH:1][CH:2]=[CH:3][CH:4]=2)=[O:42])[CH2:31][CH2:32][CH3:33]

Participants

5

Reactant 3

HCID 962WaterHCID 66144Ethyl bromopyruvateHCID 22176325HCID 22176325, compound

Product 1

HCID 69404092HCID 69404092, compoundYield 90.9%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

A solution of 9H-fluoren-9-ylmethyl[6-(aminocarbothioyl)-4-butoxy-2-isobutyl-1-oxo-1,2-dihydro-3-isoquinolinyl]methylcarbamate (0.29 g, 0.5 mmol) and ethyl bromopyruvate (0.19 g, 1 mmol) in ethanol (10 ml) was refluxed under heating for 1 h. The reaction mixture was poured into water and extracted with ethyl acetate. The extract was washed with brine, dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The residue was crystallized from ethyl acetate-diisopropyl ether to give ethyl 2-[4-butoxy-3-[[[(9H-fluoren-9-ylmethoxy)carbony]amino]methyl]-2-isobutyl-1-oxo-1,2-dihydro-6-isoquinolinyl]-1,3-thiazole-4-carboxylate (0.30 g, 90.9%) as crystals.

Workup

  1. temperatureunder heating for 1 h
  2. extractionextracted with ethyl acetate
  3. washThe extract was washed with brine
  4. dry with materialdried over anhydrous magnesium sulfate
  5. concentrationconcentrated under reduced pressure
  6. customThe residue was crystallized from ethyl acetate-diisopropyl ether

Sources & evidence

ORD record
ord-7975c810ce844b28aabd678f7b9c6774
Source dataset
uspto-grants-2006_04
Patent number
US07034039B2

Reaction notes

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