Synthesis 2015; 47(21): 3321-3332
DOI: 10.1055/s-0034-1381011
paper
© Georg Thieme Verlag Stuttgart · New York

Synthesis of 7- and 8-Functionalized 2-Aminophenoxazinones via Cyclocondensation of 2-Aminophenols

Jarosław M. Granda
,
Katarzyna Piekielska
,
Małgorzata Wąsińska
,
Natalia Kawecka
,
Mirosław Giurg*
Further Information

Publication History

Received: 26 February 2015

Accepted after revision: 07 May 2015

Publication Date:
03 August 2015 (online)


Abstract

An efficient protocol for the synthesis of 7- and 8-functionalized 4- and 2-amino-3H-phenoxazin-3-ones and 2-amino-1H-phenoxazin-1-ones by oxidation of 2-aminophenols using hydrogen peroxide activated by ebselen is presented. We demonstrate that formation of the 2-amino-3H-phenoxazin-3-one core requires that the substituents present on one of the reacting substrate molecules be eliminated under oxidative reaction conditions.

Supporting Information