2-Amino-4-ethynylphenol
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United States of America Patent
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Jan 1, 1980
Grant Date -
N/A
app pub date -
Jul 19, 1978
filing date -
Jul 19, 1978
priority date (Note) -
Expired
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Abstract
2-Amino-4-ethynylphenol, a novel compound, is prepared by a four-step synthetic sequence in which the key reaction is the treatment of 4-acetoxy-3-nitroacetophenone with a Vilsmeier reagent derived from N,N-dimethylformamide and phosphorus oxychloride. The compound is useful as an endcapping agent in the synthesis of fluorocarbon ether bibenzoxazole oligomers which, because of the presence of acetylenic terminal groups, can be cured by thermal means to provide broad-use temperature, fuel and fluid resistant vulcanizates.
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