A general method for the synthesis of β-(2-furyl)-α,β-unsaturated aldehydes is described using the Suzuki coupling reaction of furan-2-boronic acids and β-bromo-α,β-unsaturated aldehyde derivatives.
A novel stereoselective [8+2] double cycloaddition route to hydronaphthalene ring systems
作者:Weijiang Ying、Lei Zhang、Paul A. Wiget、James W. Herndon
DOI:10.1016/j.tetlet.2016.05.059
日期:2016.7
Substituted hydronaphthalenes where each of the ten carbons of the two-ring system contains functionality were obtained through a tandem [8+2] cycloaddition and base-catalyzed rearrangement process using dienylfurans and electron-deficient alkynes. If the [8+2] process is conducted under solvent-free conditions the process could be conducted in a single reaction flask without isolation of the chromatographically
Intramolecular gold(III) catalysed Diels–Alder reaction of 1-(2-furyl)-hex-1-en-5-yn-3-ol derivatives: a short and generalised route for the synthesis of hydroxyphenanthrene derivatives
作者:Khokan Samanta、Gandhi K. Kar、Achintya K. Sarkar
DOI:10.1016/j.tetlet.2012.01.018
日期:2012.3
Gold(III) catalysed intramolecular Diels–Alder reaction of various 1-(2-furyl)-hex-1-en-5-yn-3-ol derivatives has been studied to synthesise hydroxyphenanthrenes and other polynuclear aromatic hydroxyl compounds. The required precursors were synthesised by indium mediated propargylation of suitable β-furyl-α,β-unsaturated aldehydes.
作者:Olga A. Mukhina、N. N. Bhuvan Kumar、Teresa M. Cowger、Andrei G. Kutateladze
DOI:10.1021/jo5019848
日期:2014.11.21
The modular synthesis of photoprecursors and their photoinduced cyclization into substituted 1-benzazocanes of two distinct topologies is described. The key step producing an extended polyheterocyclic system involves the photogeneration of azaxylylenes and their subsequent intramolecularcycloaddition with furan-containing pendants tethered either via the aniline nitrogen or through the carbonyl group