Water → 3-(2,5-Dimethyl-phenyl)-4-ethoxymethoxy-8-methoxy-1,8-diaza-spiro[4.5]dec-3-en-2-one

HRID 1022391Notes

Reaction equation

HRID 1022391 reaction equation
[CH3:1][C:2]1[CH:7]=[CH:6][C:5]([CH3:8])=[CH:4][C:3]=1[C:9]1[C:10](=[O:22])[NH:11][C:12]2([CH2:19][CH2:18][N:17]([O:20][CH3:21])[CH2:16][CH2:15]2)[C:13]=1[OH:14].CCN(C(C)C)C(C)C.[CH2:32]([O:34][CH2:35]Cl)[CH3:33].O>O1CCCC1.C(OCC)(=O)C>[CH3:1][C:2]1[CH:7]=[CH:6][C:5]([CH3:8])=[CH:4][C:3]=1[C:9]1[C:10](=[O:22])[NH:11][C:12]2([CH2:19][CH2:18][N:17]([O:20][CH3:21])[CH2:16][CH2:15]2)[C:13]=1[O:14][CH2:35][O:34][CH2:32][CH3:33]

Participants

7

Reactant 4

HCID 962WaterHCID 18523Chloromethyl ethyl etherHCID 81531DiisopropylethylamineHCID 547422463-(2,5-Dimethyl-phenyl)-4-hydroxy-8-methoxy-1,8-diazaspiro[4.5]dec-3-en-2-one

Product 1

HCID 580312593-(2,5-Dimethyl-phenyl)-4-ethoxymethoxy-8-methoxy-1,8-diaza-spiro[4.5]dec-3-en-2-one

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Procedure

To 250 mg of 3-(2,5-dimethyl-phenyl)-4-hydroxy-8-methoxy-1,8-diaza-spiro[4.5]dec-3-en-2-one in 2.5 ml of tetrahydrofuran are added 160 □l of Hünig's base and 85 □l of chloromethyl ethyl ether. After stirring for 20 hours at room temperature, water and ethyl acetate are added and the layers are separated. The aqueous phase is extracted with ethyl acetate, the combined organic phases dried with sodium sulfate, filtered and concentrated. Chromatography (heptane/acetone 4:1) yielded 72 mg of 3-(2,5-dimethyl-phenyl)-4-ethoxymethoxy-8-methoxy-1,8-diaza-spiro[4.5]dec-3-en-2-one as a solid, mp:150-152° C.

Workup

  1. customthe layers are separated
  2. extractionThe aqueous phase is extracted with ethyl acetate
  3. dry with materialthe combined organic phases dried with sodium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated

Sources & evidence

ORD record
ord-32d706944d45499c83ad3b5fde117c23
Source dataset
uspto-grants-2014_05
Patent number
US08722578B2

Reaction notes

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