ChemInform Abstract: Novel Ring Transformation of Mesoionic Oxazoles into 2(1H)-Pyrazinones by the Reaction with TosMIC

Autor: Masami Kawase, Hidemitsu Uno, Ryosuke Saijo, Kazuki Akira, Ken-ichi Kurihara
Rok vydání: 2013
Předmět:
Zdroj: ChemInform. 44
ISSN: 0931-7597
Popis: Treatment of mesoionic 1,3-oxazolium-5-olates with TosMIC in the presence of a base causes a novel ring transformation affording 2(1H)-pyrazinones in moderate yields. The origin of C-2 carbonyl oxygen in the product was elucidated to be molecular oxygen, based on 18O-labeling experiments.
Databáze: OpenAIRE