W. Uhlig, SYNTHESIS OF FUNCTIONAL SUBSTITUTED POLYCARBOSILANES BASED ON SILYLTRIFLATE DERIVATIVES, Journal of polymer science. Part A, Polymer chemistry, 33(2), 1995, pp. 239-246
Polycarbosilanes obtained by the Wurtz method or Grignard synthesis we
re converted by protodesilylation with trifluoromethanesulfonic acid t
o triflate-substituted derivatives. Reactions of these polymeres with
nucleophiles led to novel functionally substituted polycarbosilanes. P
olycarbosilanes with a regular alternating arrangement of silicon and
carbon atoms, however, could not be obtained by this procedure. Such p
olymers were prepared by reactions of bis(trifluoromethylsulfonyloxysi
lyl) methanes with dinucleophiles. All syntheses are characterized by
a high regioselectivity and high yields at low temperatures in short r
eaction times. The structures of the polymers were proven by NMR spect
roscopy (Si-29, C-13, H-1). (C) 1995 John Wiley and Sons, Inc.