Active manganese dioxide promoted cyclization of ortho-(1H-pyrrol-1-yl)aryl and heteroaryl carboxylic acids to 5H-pyrrolo[1,2-a][3,1]benzoxazin-5-one derivatives
2013
Grande, Fedora | Brizzi, Antonella | Garofalo, Antonio | Aiello, F. (Francesca)
The hitherto unknown lactone 5H-pyrrolo[1,2-a][3,1]benzoxazin-5-one and six of its substituted derivatives have been prepared by active manganese dioxide promoted oxidative cyclization of the corresponding 2-(1H-pyrrol-1-yl)benzoic acids, under mild conditions, in moderate yields. The method was successfully extended to the cyclization of some ortho-(1H-pyrrol-1-yl)heteroaryl carboxylic acids and 2-(1H-indol-1-yl)benzoic acids.
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书目信息
出版者
Elsevier Ltd
其它主题
Benzoic acids; Pyrrole; Benzoxazines; Oxidative cyclization
语言
英语
类型
Journal Article; Text
2024-02-28
MODS