Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 54903-09-2, is researched, Molecular C9H7NO3, about Aluminum trichloride-DMF reagent in the Friedel-Crafts reaction. Application to 2(3H)benzoxazolones in the Haworth reaction, the main research direction is Friedel Crafts benzoxazolone; Haworth benzoxazolone; benzoxazolone Friedel Crafts Haworth.COA of Formula: C9H7NO3.
Benzoxazolones I (R = H, Me) underwent the Haworth reaction to give cyclic ketone derivatives II and III (n = 1, 2, X = NR, Y = O; n = 1, 2, X = O, Y = NR). Friedel-Crafts acylation of I followed by reduction, and intramol. Friedel-Crafts reaction gave II. To shorten the sequence, I was reacted with γ-butyro- and δ-valerolactone in the presence of polyphosphoric acid to give III.
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Reference:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics