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Tetra(n-propyl)ammonium nonabromide (nPr4NBr9 ) a highly reactive and selective bromination reagent Advantages of Pr elemental Br 2 : NBr 4 9 against Ph Pr4NBr9 (33 mol%) 0-23 °C, < 1 min (99%) Br Ph Br ■ excellent selectivity ■ easy handling ■ safe storage ■ appearance: red crystals Available at the abcr webshop AB 400387 Tetra(n-propyl)ammonium nonabromide (nPr4NBr9 ) 1352657-69-2 Br Br AB 400389 Tetraethylammonium nonabromide 1370414-03-1 AB 400390 Tetramethylammonium nonabromide 38932-79-5 AB 400391 1-Hexyl-3-methylimidazolium nonabromide 1642893-19-3 Gute Chemie + N Br Br - Br Br Br Br Br 3 2 - 2 . 5 1 5 0 . 6 3 2 2 0 4
Selected bromina/on reac/ons with nPr4NBr9 1 Selected bromination reactions with nPr4NBr9 1 Substrate Product Side Product Reagent Prod. Ratio Equivs. T t (°C) Yield (%) nPr4NBr9 100:0 0.33 0-23 < 1 min 99 _______________________________________________________________________________________________________________________________ nPr4NBr9 - 0.33 0-23 < 1 min 99 _______________________________________________________________________________________________________________________________ nPr4NBr9 100:0 0.33 0-23 10 min 99 _______________________________________________________________________________________________________________________________ nPr4NBr9 92:8 0.33 0-23 < 1 min 992 _______________________________________________________________________________________________________________________________ nPr4NBr9 100:0 0.33 0-23 < 1 min 92 _______________________________________________________________________________________________________________________________ nPr4NBr9 - 0.33 0-23 10 min 99 _______________________________________________________________________________________________________________________________ 1) T. M. Beck, H. Haller, J. Streuff, S. Riedel, SYNTHESIS 2014, 46, 0740-0747. 2) combined yield of cis and trans isomer 400.000 specialty chemicals – just one click away: visit the abcr web shop and discover our broad range of services at www.abcr.com Gute Chemie abcr GmbH ▪ Phone +49 721 95061 - 0 ▪ Fax +49 721 95061 - 80 ▪ info@abcr.com ▪ www.abcr.com