| Identification | More | [Name]
2,4-Dichloro-5-thiazolecarboxaldehyde | [CAS]
92972-48-0 | [Synonyms]
2,4-DICHLORO-1,3-THIAZOLE-5-CARBALDEHYDE
2,4-DICHLORO-5-FORMYLTHIAZOLE
2,4-DICHLORO-5-THIAZOLECARBOXALDEHYDE
2,4-DICHLOROTHIAZOL-5-CARBOXALDEHYDE
2,4-DICHLOROTHIAZOLE-5-CARBALDEHYDE
2,4-DICHLOROTHIAZOLE-5-CARBOXALDEHYDE
BUTTPARK 121\04-87
IFLAB-BB F2124-0686
2,4-Dichloro-1,3-thiazole-5-carboxaldehyde | [Molecular Formula]
C4HCl2NOS | [MDL Number]
MFCD00793013 | [Molecular Weight]
182.03 | [MOL File]
92972-48-0.mol |
| Chemical Properties | Back Directory | [Melting point ]
47-53℃ | [Boiling point ]
307.1±45.0 °C(Predicted) | [density ]
1.690±0.06 g/cm3(Predicted) | [Fp ]
>110°C | [storage temp. ]
under inert gas (nitrogen or Argon) at 2-8°C | [solubility ]
DMSO (Slightly), Methanol (Slightly) | [form ]
Solid | [pka]
-3.71±0.10(Predicted) | [color ]
Pale Beige | [CAS DataBase Reference]
92972-48-0(CAS DataBase Reference) |
| Safety Data | Back Directory | [Hazard Codes ]
Xi | [Risk Statements ]
R36/37/38:Irritating to eyes, respiratory system and skin . | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection . | [RIDADR ]
UN 2811 6.1/PG 3 | [WGK Germany ]
3 | [Hazard Note ]
Irritant | [HS Code ]
29341000 |
| Hazard Information | Back Directory | [Uses]
2,4-Dichloro-5-thiazolecarboxaldehyde is used in the synthesis of some novel thiazolidine-2,4-dione derivatives having antimicrobial activity.
| [Synthesis]
General procedure for the synthesis of 2,4-dichlorothiazole-5-carboxaldehyde (330): 2,4-thiazolidinedione (329, 2.7 g, 23.07 mmol) was dissolved in N,N-dimethylformamide (DMF, 1.23 mL, 15.98 mmol) at 0 °C and protected by argon and slowly added dropwise to phosphorus trichloride (8.15 mL, 87.17 mmol) (8.15 mL, 87.17 mmol), and the dropwise addition time was controlled at 15 min. Subsequently, the reaction mixture was gradually warmed to room temperature and stirred continuously for 1 hour. Next, the reaction system was heated to 120 °C and stirring was continued for 4 hours. The reaction process was monitored by thin layer chromatography (TLC). Upon completion of the reaction, the reaction mixture was carefully poured into pre-cooled ice water and extracted with dichloromethane (CH2Cl2, 3 x 100 mL). The organic phases were combined, washed sequentially with saturated sodium bicarbonate solution (100 mL) and water (100 mL), dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure to give the crude product. The crude product was purified by silica gel column chromatography with 5% ethyl acetate/hexane as eluent, and the target compound 330 (1.4 g, 33% yield) was finally obtained as a brown oil.TLC conditions: 30% ethyl acetate/hexane (Rf=0.8).1H NMR (500 MHz, DMSO-d6): δ9.87 (s, 1H). | [References]
[1] Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1992, # 8, p. 973 - 978
[2] Bioorganic and Medicinal Chemistry Letters, 2004, vol. 14, # 1, p. 235 - 238
[3] Phosphorus, Sulfur and Silicon and the Related Elements, 2006, vol. 181, # 10, p. 2435 - 2444
[4] Patent: US2010/298334, 2010, A1. Location in patent: Page/Page column 78
[5] Chemistry of Heterocyclic Compounds, 2010, vol. 46, # 3, p. 334 - 341 |
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