Unified Approach to Furan Natural Products via Phosphine‐Palladium Catalysis
作者:Violet Yijang Chen、Ohyun Kwon
DOI:10.1002/anie.202015232
日期:2021.4.12
the construction of tetraalkyl furans remains non‐trivial. The prevalence of alkyl groups in bioactive furan natural products, combined with the desirable bioactivities of tetraalkyl furans, calls for a general synthetic protocol for polyalkyl furans. This paper describes a Michael–Heck approach, using sequential phosphine‐palladium catalysis, for the preparation of various polyalkyl furans from readily
Regio-controlled Prenylation and Geranylation of 3-Furylmethylmagnesium Bromide. Selective Syntheses of 3-Substituted Furanoid and 2-Substituted 3-Methylfuranoid Terpenes
作者:Shuki Araki、Yasuo Butsugan
DOI:10.1246/bcsj.56.1446
日期:1983.5
main products. When the reactions were carried out in the presence of a catalytic amount of copper(I) iodide, normal coupling occurred and 3-substituted furans, perillene and dendrolasin, were formed in good yields. The related naturally occurring 3-substitutedthiophene, 3-(4-methyl-3-pentenyl)thiophene, was also synthesized from 3-thienylmethylmagnesium bromide and prenyl diethy phosphate.
La reaction de l'α-phenylsulfinylacetonitrile avec les aldehydes ou les cetones conduit directement aux γ-hydroxyalcenenitriles. On prepare la dendrolasine, la sirenine et l'acide tetramethyl-3,7,11,15 hexadecapentaene-2,4,6,10,14 oique
La 反应 de l'α-苯基亚磺酰基乙腈 avec les 醛 ou les cetones 管道定向辅助 γ-羟基烯腈。关于制备 la dendrolasine, la sirenine et l'acide tetramethyl-3,7,11,15 hexadecapentaene-2,4,6,10,14 oique
A SIMPLE ROUTE TO FURANS BY ORGANOALUMINUM REAGENTS
作者:Masaharu Ishiguro、Nobuo Ikeda、Hisashi Yamamoto
DOI:10.1246/cl.1982.1029
日期:1982.7.5
2,3-Disubstituted furans are synthesized from the reaction of aldehydes with allenylaluminum reagents derived from propargylic ethers.
SELECTIVE SYNTHESES OF DENDROLASIN AND SESQUIROSEFURAN BY THE COUPLING OF 3-FURYLMETHYLMAGNESIUM BROMIDE WITH GERANYL DIETHYL PHOSPHATE
作者:Shuki Araki、Yasuo Butsugan
DOI:10.1246/cl.1982.177
日期:1982.2.5
Coupling reaction of 3-furylmethylmagnesium bromide with geranyl diethyl phosphate in the presence and the absence of copper(I) iodide affords dendrolasin and sesquirosefuran, respectively, in ca. 80 % selectivity.