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RISA study of probing the mechanism of acylation Reactions and Fries Rearrangement by Polyphosphoric acid (PPA(
سال: 2007
خلاصه:
. The reactions proceeded smoothly in the presence of PPA and are highly selective for the preparation of the ortho isomers of hydroxyaryl ketones. In the same way we have investigated the effects of ortho, meta and para substituents on the acylation reactions...