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Chemical Structure| 39884-12-3 Chemical Structure| 39884-12-3

Structure of 39884-12-3

Chemical Structure| 39884-12-3

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Product Details of [ 39884-12-3 ]

CAS No. :39884-12-3
Formula : C8H10N2O2S
M.W : 198.24
SMILES Code : CC(NC1=NC(C)=C(C(C)=O)S1)=O
MDL No. :MFCD00520411

Safety of [ 39884-12-3 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H315-H319
Precautionary Statements:P501-P270-P264-P280-P302+P352-P337+P313-P305+P351+P338-P362+P364-P332+P313-P301+P312+P330

Application In Synthesis of [ 39884-12-3 ]

* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

  • Downstream synthetic route of [ 39884-12-3 ]

[ 39884-12-3 ] Synthesis Path-Downstream   1~3

  • 1
  • [ 30748-47-1 ]
  • [ 75-36-5 ]
  • [ 39884-12-3 ]
YieldReaction ConditionsOperation in experiment
83.6% With pyridine; In tetrahydrofuran; dichloromethane; at 0℃; for 2h; 5-Acetyl-2-amino-4-methylthiazole (P5) (12.35 g, 79 mmol) is suspended in THF/DCM 3: 2 mixture (150 mL). The mixture was cooled down to 0'0-and pyridine (16 mL) is added, followed by the dropwise addition of acetyl chloride (8.43 mL, 119 mmol, 1.5 eq). The mixture was stirred 2 hours at 0 C. As the acetylation is complete, the reaction is quenched with addition of water (70 mL) and diluted with EtOAc (100 mL). The two phases are separated and the organic phase is washed with one portion of 10% citric acid solution. Organic layer is dried over MgS04, filtrated and evaporated. The resulting crude mass is purified by crystallization in EtOAc/Cyclohexane mixture, to obtain N- (5-acetyl-4-methyl- 1, 3-thiazol-2-yl) acetamide (P6) as a colorless powder (13.13 g, 83. 6% yield). 1H NMR (DMSO-d6) # : 2.17 (s, 3H), 2.47 (s, 3H), 2.56 (s, 3H), 12.44 (br s, 1H). Nf (ESI) : 197.3 ; MF (ESI) : 199.3. HPLC, Rt: 1.7 min (purity: 99.7%).
83.6% With pyridine; In tetrahydrofuran; dichloromethane; at 0℃; for 2h; 5-Acetyl-2-amino-4-methylthiazole (P5) (Flrochem) (12.4 g, 79 mmol) is suspended in THF/DCM 3:2 mixture (150 ml). The mixture is cooled down to 00C and pyridine (16 ml) is added, followed by the dropwise addition of acetyl chloride (8.43 ml, 119 mmol, 1.5 eq.). The mixture is stirred 2 hours at 00C. As the acetylation is complete, the reaction is quenched with addition of water (70 ml) and diluted with EtOAc (100 ml). The two phases are separated and the organic phase is washed with one portion of 10% citric acid solution. Organic layer is dried over MgSO4, filtrated and evaporated. The resulting crude mass is purified by crystallization in EtOAc/Cyclohexane mixture, to obtain N-(5-acetyM-methyl- l,3-thiazol-2-yl)acetamide (P6) as a colorless powder (13.1 g, 83.6% yield).1HNMR (DMSO-d6) δ: 2.17 (s, 3H), 2.47 (s, 3H), 2.56 (s, 3H), 12.44 (br s, 1H). M (ESI): 197.3; M+(ESI): 199.3. HPLC (method A), Rt: 1.7 min (purity: 99.7%).
  • 2
  • [ 39884-12-3 ]
  • [ 1166227-08-2 ]
  • 3
  • [ 30748-47-1 ]
  • [ 64-19-7 ]
  • [ 39884-12-3 ]
YieldReaction ConditionsOperation in experiment
60.5% 0.360g (6.0mmol) glacial acetic acid was dissolved in 10mL DMF solution, 0.972g (6.00mmol) N, Ν'-carbonyldiimidazole (CDI) was added in portions, stirred at room temperature for 30min, added 0.624g ( 4. 0 mmol) 4-methyl-5-acetyl-2-aminothiazole, reacted at 85 C for 8 h. Cold to room temperature, the reaction solution was poured into 30mL of ice water, a large amount of solids were precipitated, suction filtration, followed by appropriate amount of saturated carbonThe solution was washed with EtOAc (EtOAc)EtOAc.Yield 60.5%, m.p. 237~239 C.
 

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