An Improved Synthesis of p-Bis(Phenylgloyoxaloyl)-Benzene
ARMY MATERIALS AND MECHANICS RESEARCH CENTER WATERTOWN MA
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Stanley E. AMMRC-TR-73-5DA-1-W-062113-A-661ketones, synthesischemistry, nitrogen heterocyclic compounds, alkynes, heat resistant plasticsphenylquinoxaline polymers, polyquinoxalines, quinoxalines, glyoxal derivatives, succinimiden-bromo, copperi compounds, diketone compoundsAn improved synthesis of p-bisphenylglyoxaloylbenzene BPG, one of the co- monomers for the high temperature resistant polyphenylquinoxaline system, has been achieved. The method consists of three simple, high yield steps leading to a 70 overall yield of BPG. The starting material, phenylacetylene, is quantitatively converted to its cuprous salt which is then coupled with p- diiodobenzene to give p-bisphenylethynylbenzene in 73 yield. The diacetylene is oxidized to BPG in 96 yield using N-bromosuccinimide in dimethylsulfoxide.
- Organic Chemistry