Markezich, R. L.; Zamek, O. S.; Donahue, P. E.; Williams, F. J. published the artcile< Reactions of 4-nitrophthalic anhydride with potassium fluoride and potassium nitrite>, Quality Control of 118-45-6, the main research area is nitrophthalic anhydride substitution fluoride; fluorophthalic anhydride preparation; phthalic anhydride reaction nitrite.
The reaction of potassium fluoride with 4-nitrophthalic anhydride gave good yields of 4-fluorophthalic anhydride; the reaction was run neat at 210-240° in an aprotic solvent at a lower temperature, or in refluxing acetonitrile containing a crown ether. The potassium nitrite produced in the exchange reaction was captured by unreacted 4-nitrophthalic anhydride to give the dipotassium salt of 4-nitrophthalic acid and nitrogen oxides. The reaction of potassium nitrite with several other substituted phthalic anhydrides in DMF yielded the dipotassium salts of the resp. phthalic acids.
Journal of Organic Chemistry published new progress about Substitution reaction. 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, Quality Control of 118-45-6.
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Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics