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Tri-tert-butylphosphonium tetrafluoroborate is a ligand used in the palladium-catalyzed enantioselective alfa-arylation of N-boc-pyrrolidine. It is also used with a palladium(0)-15-membered, triolefinic, macrocyle in Suzuki cross-coupling reactions of aryl bromides and chlorides. Further, it is used in the Heck coupling of vinyl tosylates with olefins.
Convenient, air-stable replacement for tri-tert-butylphosphine, e.g. in Suzuki, Heck, Stille and Sonogashira coupling reactions: Org. Lett., 3, 4295 (2001).
Takase, N.; Kuwabara, J.; Choi, S. J.; Yasuda, T.; Han, L.; Kanbara, T. Microwave-assisted polycondensation of 4-octylaniline with dibromoarylene. J. Polym. Sci., Part A: Polym. Chem. 2015, 53 (4), 536-542.
He, Y.; Zhang, X.; Fan, X. Synthesis of diversely substituted 2-(furan-3-yl)acetates from allenols through cascade carbonylations. Chem. Commun. 2015, 51 (90), 16263-16266.
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.