Gold(III) Bromide Catalyzed Furannulation of 2-Alkynylcycloalk-2-enols: An Expedient Route to Fused Furans
作者:P. Perumal、C. Praveen、P. Kiruthiga
DOI:10.1055/s-0029-1217517
日期:2009.7
An efficient synthesis of fused furans from 2-alkynylcycloalk-2-enols via gold(III) bromide catalyzed cycloisomerization was achieved. The reaction condition is moderate and amenable to structurally diverse substrates, leading to good yield of products.
The reaction of propargylic oxiranes with platinum catalyst in aqueous media is described. Furans having a variety of substituents were conveniently synthesized with high efficiency.
aziridines with a platinum catalyst in aqueous media are described. Furans having a variety of substituents were conveniently synthesized by the platinum-catalyzed reaction of propargylic oxiranes. The reaction in the presence of N-iodosuccinimide afforded the 3-iodo-substituted furan, which was further functionalized to tetrasubstituted furans with high efficiency. Propargylic aziridines were also reacted
An Au(I)-catalyzed cyclization/1,2-rearrangement/aromatization cascade of 3-yne-1,2-diols has been successfully realized. This reaction not only provides a new and efficient strategy for the synthesis of substituted cycloalka[b]furancompounds as well as their derivatives, but might also facilitate related biological studies.
已经成功地实现了Au(I)催化的3-炔-1,2-二醇的环化/ 1,2-重排/芳构化级联反应。该反应不仅为合成取代的环烷基[ b ]呋喃化合物及其衍生物提供了新的有效策略,而且还可能促进相关的生物学研究。