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1H-Pyrazole-4-boronic acid pinacol ester is a useful reagent for Suzuki-Miyaura cross-couplings as well as Ruthenium-catalyzed asymmetric hydrogenation. It is also used as reagent for preparing VEGF, Aurora, RHO (ROCK), Janus Kinase 2, c-MET, ALK, S-nitrsoflutathione reductase, CDC7, Acetyl-CoA carboxylase inhibitors as well as other biologically active compounds.
Peter R. Mullens. An improved synthesis of 1-methyl-1H-pyrazole-4-boronic acid pinacol ester and its corresponding lithium hydroxy ate complex: application in Suzuki couplings. Tetrahedron Letters. 2009, 50 (49), 6783-6786.
Jongwon Lim.; Brandon Taoka.; Ryan D Otte.; Kerrie Spencer.; Christopher J Dinsmore.; Michael D Altman.; Grace Chan.; Craig Rosenstein.; Sujata Sharma.; Hua-Poo Su.; Alexander A Szewczak.; Lin Xu.; Hong Yin, Joan Zugay-Murphy.; C Gary Marshall.; Jonathan R Young. Discovery of 1-amino-5H-pyrido[4,3-b]indol-4-carboxamide inhibitors of Janus kinase 2 (JAK2) for the treatment of myeloproliferative disorders. Journal of medicinal and pharmaceutical chemistry. 2011, 54 (20), 7334-7349.
Hazard Statements: H315-H319-H335
Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.
Precautionary Statements: P261-P280a-P305+P351+P338-P304+P340-P405-P501a
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.