Regioselectivity and regiospecificity of benzoxazinone (2-isopropyl-4<i>H</i>-3,1-benzoxazinone) derivatives toward nitrogen nucleophiles and evaluation of antimicrobial activity
作者:Maher A. El-hashash、Abeer M. El-Naggar、Eman A. El-Bordany、Magda I. Marzouk、Tarek M. S. Nawar
DOI:10.1080/00397911.2016.1194998
日期:2016.7.17
ABSTRACT A novel group of 6-iodoquinazolin-4(3H)-one derivatives was prepared. The reaction of the benzoxazinone 3 with various nitrogennucleophiles such as formamide and hydrazine hydrate and also the reaction of the isopropylquinazolinone 4 with hydrazonyl chloride have been shown to proceed with a high degree of regioselectivity at C(2). Spiro heterocycles have been found to play fundamental roles