A precursor route to polyacetylene

1 Synthesis of Poly(diethyl 7-oxabicyclo[2.2.1]hepta-2,S-diene-2,3-dicarboxylate) 

We thank Shokyoku Kanaoka for the helpful translation of an article, K. B. Wagener for sending us a preprint, and Bruce Novak and Adam Safir for supplying experimental details of their work. 

Alkynes carrying unpaired electron centers are classified into three groups depending on in which part of the molecule the unpaired electron resides in a substituent remote from the alkyne moiety, in a transition metal ion Ugated with the alkyne, or a to the C=C triple bond. 

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Figure 10-16 A precursor route to polyacetylene which proceeds via an insertion polymerization followed by a retro-Diels-Alder reaction [50],...

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