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4-Bromobenzenesulfinic acid sodium salt dehydrate is used in the preparation of unsymmetrical internal alkynes and vinyl sulfones by reaction with alkynes by using palladium as a catalyst.
Xu, Y.; Zhao, J.; Tang, X.; Wu, W.; Jiang, H. Chemoselective Synthesis of Unsymmetrical Internal Alkynes or Vinyl Sulfones via Palladium-Catalyzed Cross-Coupling Reaction of Sodium Sulfinates with Alkynes. Adv. Synth. Catal. 2014, 356 (9), 2029-2039.
Mery, S. J.; Nicoud, J. F.; Guillon, D. Synthesis of Ferroelectric Liquid Crystalline Polysiloxanes Having a Chiral n-Alkyl Tolansulfinate as the Pendant Group. Macromolecules 1995, 28 (16), 5440-5449.
Gefahrenhinweise (EU): H315-H319-H335
Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.
Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves and eye/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.