Ru(0) complex catalyzed polyaddition
New synthesis of poly(alkylenebenzoxazole) and poly(alkylenebenzimidazole) |
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| Authors: | Isao Yamaguchi Kohtaro Osakada Takakazu Yamamoto |
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| Affiliation: | (1) Research Laboratory of Resources Utilization, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan, JP |
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| Abstract: | Summary
The reactions of α,ω-diyne, HC≡C(CH2)mC≡CH (m = 6 and 8), with 3,3'-diaminobenzidine and with 3,3'-diamino-4,4'-dihydroxybiphenyl in the presence of RU3(CO)12-PPh3 catalyst give the corresponding poly(alkylenebenzoxazole)s and poly(alkylenebenzimidazole)s, respectively. The former polymers
obtained from the equimolar reaction of the monomers are partly soluble in polar organic solvents such as DMF, DMSO, and NMP,
while the poly(benzimidazole)s are soluble in these solvents. GPC measurement shows the molecular weights of the polymers,
M
n of 4.8−14.1×103 and M
w of 6.4−19.7×103.
Received: 24 November 1998/Revised version: 21 December 1998/Accepted: 24 December 1998 |
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