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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.
- Source :
-
Tetrahedron . Nov2013, Vol. 69 Issue 47, p9951-9956. 6p. - Publication Year :
- 2013
-
Abstract
- Abstract: 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. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00404020
- Volume :
- 69
- Issue :
- 47
- Database :
- Academic Search Index
- Journal :
- Tetrahedron
- Publication Type :
- Academic Journal
- Accession number :
- 91266328
- Full Text :
- https://doi.org/10.1016/j.tet.2013.09.072