T. Tsuda et al., EFFICIENT SPONTANEOUS 1 1 COPOLYMERIZATION OF BIS(YNAMINE)S WITH CARBON-DIOXIDE TO POLY(4-PYRONE)S/, Journal of the Chemical Society, Chemical Communications, (23), 1995, pp. 2417-2418
Spontaneous 1:1 copolymerization of CO2 with 1,3- and 1,4-bis(N,N-diet
hylaminoethynyl)benzenes in the absence of a catalyst takes place to a
fford poly(4-pyrone)s with molecular mass M(n) > 10000 and in high yie
ld.