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4,4?-Difluorobenzil is used in the preparation of 2,3-bis(4-fluorophenyl)thieno[3,4-b]pyrazine. It is also used in the synthesis of poly(ether-α-diketone)s, via nucleophilic substitution reaction with bisphenol A, 4,4?-difluoro-2,3-diphenylpyrazine (DPPF) and 4,4?-difluoro-5-methyl 2,3-diphenylpyrazine (MDPPF), via direct condensation with ethylenediamine and 1,2-diaminopropane, respectively, 2,3-bis(4-fluorophenyl)quinoxaline, via direct condensation with 1,2-phenylenediamine.
Fu-Ming Hwang; Hsing-Yi Chen; Po-Shen Chen; Chao-Shiuan Liu; Yun Chi; Ching-Fong Shu; Fang-Iy Wu; Pi-Tai Chou; Shie-Ming Peng; Gene-Hsiang Lee. Iridium(III) complexes with orthometalated quinoxaline ligands: subtle tuning of emission to the saturated red color. Inorganic Chemistry.2005, 44 (5), 1344-1353.
Giulio G Muccioli; Johan Wouters; Jacques H Poupaert; Bernadette Norberg; Wolfgang Poppitz; Gerhard K E Scriba; Didier M Lambert. Versatile access to benzhydryl-phenylureas through an unexpected rearrangement during microwave-enhanced synthesis of hydantoins. Organic Letters.2003, 5 (20), 3599-3602.
Dichiarazioni di rischio (UE): H315-H319-H335
Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.
Dichiarazioni precauzionali: 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.