2-PHTHALIMIDOETHANESULFONYL CHLORIDE

2-PHTHALIMIDOETHANESULFONYL CHLORIDE Property

Melting point:

158-163℃

Boiling point:

416.5±28.0 °C(Predicted)

Density 

1.585±0.06 g/cm3(Predicted)

vapor pressure 

0-0Pa at 20-50℃

storage temp. 

2-8°C

pka

-2.47±0.20(Predicted)

form 

Slurry

color 

Yellow to orange to brown

Water Solubility 

Reacts with water.

Sensitive 

Moisture Sensitive

Stability:

Hygroscopic, Moisture Sensitive

InChIKey

HCPVYBCAYPMANM-UHFFFAOYSA-N

LogP

1.12-2.44 at 25℃

CAS DataBase Reference

4403-36-5(CAS DataBase Reference)

Safety

Hazard Codes 

Xi,C

Risk Statements 

34

Safety Statements 

26-36/37/39-45-60

RIDADR 

3261

WGK Germany 

3

HazardClass 

8

PackingGroup 

II

HS Code 

29251900

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H314Causes severe skin burns and eye damage

Precautionary statements

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

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

P310Immediately call a POISON CENTER or doctor/physician.

2-PHTHALIMIDOETHANESULFONYL CHLORIDE Chemical Properties,Usage,Production

Uses

2-(Phthalimido)ethanesulfonyl chloride is an important raw material and intermediate used in pharmaceuticals, agro based and dye stuff fields.

Synthesis

The general procedure for the synthesis of 2-phenylenedi(meth)iminoethane sulfonyl chloride from phthalic anhydride and taurine is as follows:1. A suspension of taurine (8.0 g, 63.9 mmol) and potassium acetate (6.7 g, 68.3 mmol) was refluxed in acetic acid for 15 min. 2. Phthalic anhydride (10.1 g, 68.4 mmol) was added, and the reaction was continued to be refluxed for 3 h. 3. Upon completion of the reaction, the reaction was cooled to room temperature, the solid product was collected by filtration, washed with cold acetic acid and dried under vacuum at 100 °C to give a white solid.4. The above white solid (14.3 g, 54.7 mmol) was suspended in toluene (50 ml), and phosphorus pentachloride (8.12 g, 39.0 mmol) was added under the protection of nitrogen.5. After the reaction mixture was heated and refluxed for 1 hour The reaction mixture was heated and refluxed for 1 hour, then phosphorus pentachloride (8.12 g, 39.0 mmol) was added again and refluxing was continued for another 2.5 hours.6 Upon completion of the reaction, a brownish solution was poured from a small amount of the solid formed, and the solution was subsequently concentrated under vacuum.7 The concentrated residue was poured into a mixture of ice and water (ice:water=50:50, 100 ml), and the solid product was filtered to collect the solid product.8 Finally, the solid was dried under vacuum at 45°C for 16 hours to obtain a light brown color.9 The reaction was carried out under nitrogen protection. Vacuum dried for 16 hours to give a light brown solid product (6.4 g, 34% yield).

References

[1] Patent: US6313312, 2001, B1
[2] Archiv der Pharmazie, 2007, vol. 340, # 12, p. 656 - 660
[3] Journal of Medicinal Chemistry, 2010, vol. 53, # 6, p. 2390 - 2400
[4] European Journal of Medicinal Chemistry, 2018, vol. 146, p. 108 - 122