Synthesis of new 2,3-perfluoroalkyl- and perfluoroaryl-1,4-diazabutadienes (α-diimines)
作者:Bruce N. Diel、Peter J. Deardorff、Catherine M. Zelenski
DOI:10.1016/s0040-4039(99)01692-5
日期:1999.12
Reaction of either decafluorobenzil or perfluorobiacetyl with two equivalents of Li[N(SiMe3)(2)], followed by quenching with ClSiMe3, provides N,N'-bis(trimethylsilyl)-1,2-bis(pentafluorophenyl)ethanediimine 1 and N,N'-bis(trimethylsilyl)- 1,1,1,4,4,4-hexafluoro-2,3-butanediimine 2, respectively. These represent the first examples of perfluoroalkyl- and perfluoroaryl-substituted diazabutadienes. Both compounds have been characterized based on C-13 NMR, IR, elemental analysis and, for 1, single crystal X-ray crystallographic structure determination. Compound 1 crystallizes in the C2/c space group, with a=20.3203(9) X, b=6.0758(3) X, c=19.7948(9) X, alpha=90 degrees, beta=106.2903(7)degrees, gamma=90 degrees. (C) 1999 Elsevier Science Ltd. All rights reserved.