Thiazolo[4,5-c]pyridine-2-thiol

Thiazolo[4,5-c]pyridine-2-thiol Property

storage temp. 

under inert gas (nitrogen or Argon) at 2-8°C

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H302Harmful if swallowed

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Thiazolo[4,5-c]pyridine-2-thiol Chemical Properties,Usage,Production

Synthesis

Synthesis of thiazolo[4,5-c]pyridine-2-thiol (68): 3-amino-4-chloropyridine (67, 1.0 g, 8.3 mmol) was dissolved in 15 mL of anhydrous N,N-dimethylformamide (DMF) under nitrogen protection. Potassium ethylxanthate (KSCSOEt, 2.0 g, 12.5 mmol) was added to this solution in batches. The reaction mixture was stirred at 95-100°C for 15 h. The progress of the reaction was monitored by thin layer chromatography (TLC, unfolding agent: 70% ethyl acetate/hexane) to confirm complete consumption of the raw material. Upon completion of the reaction, the reaction was quenched with 35 mL of ice water followed by the addition of 40 mL of 1 M hydrochloric acid (HCl). The mixture was continued to be stirred for 30 minutes, during which time a precipitate was generated. The precipitate was collected by filtration, washed with 250 mL of water and dried under vacuum over phosphorus pentoxide (P4O10) to afford the target product thiazolo[4,5-c]pyridine-2-thiol (68, 0.98 g, 70% yield).

References

[1] Patent: WO2006/122156, 2006, A2. Location in patent: Page/Page column 145-146
[2] Advanced Synthesis and Catalysis, 2017, vol. 359, # 11, p. 1837 - 1843