Methanol → 4-(4-Oxo-2-thioxo-1-(4-methylphenyl)-1,3-diazaspiro[4.5]dec-3-yl)-2-trifluoromethylbenzonitrile

HRID 1927333Notes

Reaction equation

HRID 1927333 reaction equation
N=[C:2]1[C:6]2([CH2:11][CH2:10][CH2:9][CH2:8][CH2:7]2)[N:5]([C:12]2[CH:17]=[CH:16][C:15]([CH3:18])=[CH:14][CH:13]=2)[C:4](=[S:19])[N:3]1[C:20]1[CH:27]=[CH:26][C:23]([C:24]#[N:25])=[C:22]([C:28]([F:31])([F:30])[F:29])[CH:21]=1.C[OH:33].O>Cl>[O:33]=[C:2]1[C:6]2([CH2:11][CH2:10][CH2:9][CH2:8][CH2:7]2)[N:5]([C:12]2[CH:17]=[CH:16][C:15]([CH3:18])=[CH:14][CH:13]=2)[C:4](=[S:19])[N:3]1[C:20]1[CH:27]=[CH:26][C:23]([C:24]#[N:25])=[C:22]([C:28]([F:31])([F:30])[F:29])[CH:21]=1

Participants

5

Reactant 3

HCID 887MethanolHCID 962WaterHCID 866098544-(4-Imino-2-thioxo-1-(4-methylphenyl)-1,3-diazaspiro[4.5]dec-3-yl)-2-trifluoromethylbenzonitrile

Product 1

HCID 159517224-(4-Oxo-2-thioxo-1-(4-methylphenyl)-1,3-diazaspiro[4.5]dec-3-yl)-2-trifluoromethylbenzonitrile

Reagents, catalysts & solvents 1

HCID 313Hydrochloric AcidSolvent

Procedure

A mixture of 9b (0.035 g, 0.08 mmol) in HCl aq., 2N (1 ml) and methanol (3 ml) was heated to reflux for 2 h. After being cooled to room temperature, the reaction mixture was poured into cold water (5 ml) and extracted with ethyl acetate (6 ml). The organic layer was dried over MgSO4, concentrated and chromatographed (dichloromethane) to yield 4-(4-Oxo-2-thioxo-1-(4-methylphenyl)-1,3-diazaspiro[4.5]dec-3-yl)-2-trifluoromethylbenzonitrile, 9c, [-RD48] (0.034 g, 0.076 mmol, 95%) as a white powder.

Workup

  1. temperaturewas heated
  2. temperatureto reflux for 2 h
  3. extractionextracted with ethyl acetate (6 ml)
  4. dry with materialThe organic layer was dried over MgSO4
  5. concentrationconcentrated
  6. customchromatographed (dichloromethane)

Sources & evidence

ORD record
ord-a66b730308664421be9976a9abe157e4
Source dataset
uspto-grants-2012_05
Patent number
US08183274B2

Reaction notes

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