Thiourea → HCID 58442537, compound

HRID 1465671Notes

Reaction equation

HRID 1465671 reaction equation
Br[CH2:2][C:3]([C:5]1[C:10]([CH3:11])=[CH:9][C:8]([S:12][CH3:13])=[CH:7][C:6]=1[CH3:14])=O.[NH2:15][C:16]([NH2:18])=[S:17]>CCO>[CH3:14][C:6]1[CH:7]=[C:8]([S:12][CH3:13])[CH:9]=[C:10]([CH3:11])[C:5]=1[C:3]1[N:15]=[C:16]([NH2:18])[S:17][CH:2]=1

Participants

4

Reactant 2

HCID 2723790ThioureaHCID 58442400HCID 58442400, compound

Product 1

HCID 58442537HCID 58442537, compoundYield 45%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

A mixture of 2-bromo-1-(2,6-dimethyl-4-(methylthio)phenyl)ethanone (4.64 g, 17.0 mmol) and thiourea (1.29 g, 17.0 mmol) in 95% EtOH (24.3 mL) was heated at reflux for 120 min. The solution was concentrated and mixed with water (50 mL) and saturated aqueous Na2CO3 (4.0 mL). The resultant precipitate was filtered and recrystallized in toluene (30 mL). The solids were filtered and dried under vacuum to give 4-(2,6-dimethyl-4 (methylthio)phenyl)thiazol-2-amine (1.9 g) as light yellow solids in 45% yield: 1H NMR (500 MHz, CDCl3) δ 6.97 (s, 2 H), 6.26 (s, 1 H), 2.47 (s, 3 H), 2.15 (s, 6 H).

Workup

  1. temperaturewas heated
  2. temperatureat reflux for 120 min
  3. concentrationThe solution was concentrated
  4. additionmixed with water (50 mL) and saturated aqueous Na2CO3 (4.0 mL)
  5. filtrationThe resultant precipitate was filtered
  6. customrecrystallized in toluene (30 mL)
  7. filtrationThe solids were filtered
  8. customdried under vacuum

Sources & evidence

ORD record
ord-6eb84ac59cac45acaf7daaefc26f3547
Source dataset
uspto-grants-2015_04
Patent number
US08999983B2

Reaction notes

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