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[15418-29-8] C8H12BCuF4N4 (MW 314.60) InChI = 1S/4C2H3N.BF4.Cu/c4*1-2-3;2-1(3,4)5;/h4*1H3;;/q;;;;-1;+1 InChIKey = YZGSKMIIVMCEFE-UHFFFAOYSA-N (catalyst in Diels–Alder3 and Ullmann5 reactions, intramolecular aromatic annulations,6, 7 ring expansions in steroids8) Physical Data: white crystals that decompose slowly in moist air9 to a greenish solid;10 mp 159–161 °C, dec 270 °C9 (161–171 °C, sealed tube;10 167–169 °C with decomposition11); d 1.466 g cm−3;10 IR ν 2270, 2290 (CN) cm−1.9 Solubility: sol toluene, CH2Cl2, MeCN. Form Supplied in: prepared as needed. Analysis of Reagent Purity: gravimetric determination of Cu.9 Preparative Methods: several available, e.g. modification of the known hexafluorophosphate procedure,12 addition of Acetonitrile to the CuBF4–toluene complex,10 and treatment of Copper(I) Oxide with Boron Trifluoride Etherate in MeCN.11 Purification: can be recryst from hot MeCN and dried in vacuo at 80 °C for 12 h.13 Handling, Storage, and Precautions: irritant; moisture sensitive; handle under inert atmosphere. Use in a fume hood. |
