✦ LIBER ✦

High-pressure synthesis of cyclic mesitylacetylene oligomer

✍ Scribed by Yoshitsugu Kojima; Takaaki Matsuoka; Hideroh Takahashi

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 123 KB
Volume: 72
Category: Article
ISSN: 0021-8995
DOI: 10.1002/(sici)1097-4628(19990620)72:12<1539::aid-app5>3.0.co;2-q

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✦ Synopsis

Reaction of mesitylacetylene was carried out by annealing under high pressure (0.13 and 0.52 GPa). The products obtained were classified into soluble and insoluble products in chloroform. The insoluble product reacted under 0.13 GPa was the mesitylacetylene polymer. The soluble product reacted under 0.13 GPa was classified as the monomer and the oligomer [number-average molecular weight (M n ): 390, weightaverage molecular weight (M w ): 453, Oligomer yield (O y ): 36%]. The oligomer yield was accelerated by pressure [pressure: 0.13-0.52 GPa, M n : 390-315, M w : 453-968, O y : 36-98%]. Field desorption mass spectrum showed that the oligomer had cyclic structure. The result of the elementary analysis revealed that the insoluble product reacted under 0.52 GPa was a polycyclic aromatic compound.

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