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Benzotriazolium hydrogensulphate

✍ Scribed by Giordano, F.


Book ID
114527236
Publisher
International Union of Crystallography
Year
1980
Weight
280 KB
Volume
36
Category
Article
ISSN
0567-7408

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## Abstract Polycondensation reactions of phenols with phthalic anhydride were carried out in the presence of ferric hydrogensulphate under melt conditions. The reactions proceeded in short reaction times by using a catalytic amount of Fe(HSO4)3 and the corresponding fluorescein derivatives were ob