31699-02-2Relevant articles and documents
METHOD FOR PRODUCING OXAZOLE COMPOUND
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Paragraph 0049;0053-0054, (2016/10/10)
PROBLEM TO BE SOLVED: To provide a method for producing an oxazole compound which makes it possible to obtain an oxazole compound inexpensively and safely. SOLUTION: A ketone compound, a nitrile compound, an iodinating agent, an oxidizing agent and an acid catalyst are mixed for a reaction to obtain an oxazole compound. SELECTED DRAWING: Figure 1 COPYRIGHT: (C)2016,JPOandINPIT
One-pot preparation of 2,5-disubstituted and 2,4,5-trisubstituted oxazoles from aromatic ketones with molecular iodine, oxone, and trifluoromethanesulfonic acid in nitriles
Imai, Sho,Kikui, Hiroki,Moriyama, Katsuhiko,Togo, Hideo
, p. 5267 - 5274 (2015/07/15)
Alkyl aryl ketones were successfully converted into the corresponding 2,5-disubstituted and 2,4,5-trisubstituted oxazoles in good to moderate yields in a one-pot manner, utilizing iodine, Oxone, and trifluoromethanesulfonic acid in nitriles under transition-metal-free conditions. The present method could be used for the preparation of Oxaprozin from benzyl phenyl ketone and succinonitrile. A possible reaction mechanism was proposed in which the key intermediates were α-iodoalkyl aryl ketones and α-iodosylalkyl aryl ketones.
Synthesis of highly substituted oxazoles through iodine(III)-mediated reactions of ketones with nitriles
Saito, Akio,Hyodo, Nao,Hanzawa, Yuji
supporting information, p. 11046 - 11055 (2012/11/07)
In the presence of trifluoromethanesulfonic acid (TfOH) or bis(trifluoromethanesulfonyl) imide (Tf2NH), iodosobenzene (PhI=O) efficiently promoted the reactions of dicarbonyl compounds as well as monocarbonyl compounds with nitriles to give 2,4-disubstituted and 2,4,5-trisubstituted oxazole in a single step under the mild conditions.