Indium Triflate-Assisted Nucleophilic Aromatic Substitution Reactions of Nitrosobezene-Derived Cycloadducts with Alcohols
作者:Baiyuan Yang、Marvin J. Miller
DOI:10.1021/ol9027607
日期:2010.1.15
Exclusive nucleophilic aromatic substitution of hydrogen in conjunction with cleavage of the N−O bond was observed when nitrosobenzene-derived nitroso cycloadducts were treated with indium triflate in the presence of alcohols. Aromatic alkoxylated syn-1,4 aminocycloalkenol products with good to excellent regioselectivity (16:84 to 0:100, ortho:para) were obtained.
By Diels—Alder-reaction of nitroso benzene with cyclic dienes or cycloheptatriene, some bicyclic 1.2-oxazines were prepared. The reduction of these compounds yields, with cleavage of the NO-bond, cis-1.4-amino cyclenols.