The reactions between o-hydroxylphenyl-functionalized enaminones and sulfonyl hydrazines providing 3-sulfenylated chromones via domino chromone ring construction and C(sp2)–H bond sulfenylation have been achieved under transition-metal-free conditions by using KIO3 as the only catalyst.
将 o-羟基苯基官能化烯酮与磺酰基
肼之间的反应通过使用 KIO3 作为唯一催化剂,在过渡
金属无参与的条件下实现,从而通过多米诺
咖啡因环构建和C(sp2)-H键磺化反应,得到了3-磺基
色酮。