97971-75-0

Usage

Preparation

reparation from lin-parabenzotetraphenyl-–difurfuran by oxidation with chromium trioxide in refluxing acetic anhydride for >1 h, followed by saponification of the 2,5-dibenzoylhydroquinone dibenzo-ate so formed with potassium hydroxide in ethanol in a water bath for 30 min (43%).

Upstream product

• 856055-67-9 2,5-diacetoxy-terephthaloyl chloride 
• 71-43-2 benzene 
• 14210-97-0 1,4-dibenzoyloxybenzene 
• 97971-74-9 (2-hydroxy-5-benzoyloxyphenyl)(phenyl)methanone 
• 610-92-4 2,5-dihydroxy-1,4-benzenedicarboxylic acid 
• 28784-75-0 2,5-diacetoxy-1,4-benzenedicarboxylic acid 

Downstream Products

• 18093-41-9 2,5-dibenzoyl-[1,4]benzoquinone 
• 95025-86-8 1,4-dibenzoyl-2,5-dimethoxy-benzene 

Relevant academic research and scientific papers

Facile synthesis of regio-isomeric naphthofurans and benzodifurans

Naphtho[1,2-b]furans 1a-f, naphtho[2,1-b]furans 2a-f, benzo[1,2-b:5,4- b′]difurans 3a-b, benzo[1,2-b:4,5-b′]difurans 4a-b, and benzo[1,2-b:4,3-b′]difurans 5a-b were synthesized by base-catalyzed cyclization reaction of the corresponding o-alkoxybenzoylarene derivatives. The o-alkoxybenzoylarenes were obtained from the etherification reaction of the o-hydroxybenzoylarenes, which were prepared either by the reaction of methoxyarenes with benzoyl chloride in the presence of aluminum chloride or by photo-Fries rearrangement of aryl benzoates. Graphical Abstract.

Photo-Fries Rearrangement: Rearrangement of Benzoyloxy Compounds

Photo-Fries migration of the benzoyl group in 1-benzoyloxy-5-methoxy naphthalene, 1,4-dibenzoyloxy-2-methyl naphthalene, 1,4-dibenzoyloxy naphthalene, 1,5-dibenzoyloxy naphthalene, 8-benzoyloxy quinoline, 1,2-dibenzoyloxy benzene, 1,3-dibenzoyloxy benzene, and 1,4-dibenzoyloxy benzene afforded the corresponding mono and di-C-benzoyl products. - Keywords: Naphthyl benzoate derivatives; 8-Benzoyloxy quinoline; Phenyl dibenzoates