作者:Donald Craig、N. Paul King、Jörg T. Kley、David M. Mountford
DOI:10.1055/s-2005-918448
日期:——
pyrrol-2-ylmethyl tosylacetates undergo facile decarboxylative Claisen rearrangement upon exposure to N,O-bis(trimethylsilyl)acetamide-potassium acetate to yield the corresponding 2,3-disubstituted heteroaromatic products in good yield. However, for 1-(thien-2-yl)ethyl tosylacetates and substrates derived from 3-(hydroxyalkyl)indoles rearomatisation does not occur.
呋喃-2-基甲基、噻吩-2-基甲基和吡咯-2-基甲基甲苯磺酸酯在暴露于 N,O-双(三甲基甲硅烷基)乙酰胺-乙酸钾后容易发生脱羧克莱森重排,从而产生相应的 2,3-二取代杂芳烃产物良好的产量。然而,对于甲苯磺酸 1-(噻吩-2-基)乙酯和衍生自 3-(羟烷基)吲哚的底物,不会发生再芳构化。