Divergent Reactions of
<scp>2‐Aminophenol</scp>
with
<scp>α‐Bromoacetate</scp>
: Asymmetric Synthesis of Two Regioisomeric 1,
<scp>4‐Benzoxazinones</scp>
作者:Seo Yun Kim、Gun Hee Han、Su Kyung Hong、Jieun Park、Yong Sun Park
DOI:10.1002/bkcs.12165
日期:2021.2
2‐Aminophenol displays a diverse pattern of reactivity in the substitution reaction of α‐bromoacetate. The substitution under neutral or basic conditions results in the formation of 1,4‐benzoxazinones, whereas Lewis acid‐promoted substitution leads to Friedel–Crafts alkylation of 2‐aminophenol. Asymmetric synthesis of two regioisomeric 1,4‐benzoxazinones is accomplished from the nucleophilic substitution