A bicyclization reaction with two molecular allenyl ketones and isocyanides: synthesis of a lactone-containing azaspirocycle derivative
作者:Hongdong Yuan、Chongrong Tang、Shikuan Su、Lei Cui、Xueshun Jia、Chunju Li、Jian Li
DOI:10.1039/c9cc02785h
日期:——
A novel bicyclization reaction of twomolecular allenyl ketones and isocyanides has been disclosed. This strategy allows for the construction of structurally complex spirocyclic lactam–lactone systems in an efficient manner. This protocol also demonstrates other advantages such as high synthetic efficiency, atom economy, and broad substrate scope under mild conditions.
Synthese de composes dihydro-2,3 furanniques par hydroboration d'alcools β-acetyleniques
作者:Gilbert Dana、Bruno Figadère、Estera Touboul
DOI:10.1016/s0040-4039(01)80919-9
日期:1985.1
Hydroboration of β-acetylenic alcohols followed by NaOH/H2O2 oxidation leads to hemiacetals of γ-aldols which are easily dehydrated to 2,3-dihydrofuran compounds. The reaction gives good yields with hindered alcohols and its stereochemistry may be controlled during the organometallic synthesis of the starting alcohol.
β-炔醇的硼氢化反应,然后进行NaOH / H 2 O 2氧化,导致生成的γ-醛缩醛半缩醛容易脱水成2,3-二氢呋喃化合物。该反应在受阻醇的作用下具有良好的收率,并且可以在起始醇的有机金属合成过程中控制其立体化学。
Palladium <scp>Iodide‐Catalyzed</scp> Selective Carbonylative Double Cyclization of 4‐(<scp>2‐Aminophenyl</scp>)‐3‐yn‐1‐ols to Dihydrofuroquinolinone Derivatives
作者:Raffaella Mancuso、Alex De Salvo、Patrizio Russo、Aurelia Falcicchio、Nicola Della Ca’、Leonardo Pantoja Munoz、Bartolo Gabriele
DOI:10.1002/cjoc.202300277
日期:2023.11
The PdI2/KI-catalyzed oxidative carbonylation of 4-(2-aminophenyl)-3-yn-1-ols, bearing two potential nucleophilic groups in suitable positionselectively leads to dihydrofuroquinolinone derivatives in fair to high yields (60%—89%) and excellent turnover numbers (180—267 mol of product per mol of Pd) over 19 examples, through a mechanistic pathway involving initial O-cyclization followed by N-cyclocarbonylation
DANA, G.;FIGADERE, B.;TOUBOUL, E., TETRAHEDRON LETT., 1985, 26, N 46, 5683-5684
作者:DANA, G.、FIGADERE, B.、TOUBOUL, E.
DOI:——
日期:——
Gold Catalysis: No Steric Limitations in the Phenol Synthesis
作者:A. Stephen K. Hashmi、Ralph Salathé、Wolfgang Frey
DOI:10.1002/chem.200600533
日期:2006.9.6
Different dihydroisoindol-4-ols and 8-hydroxytetrahydroisoquinolines were prepared by the gold-catalyzed phenolsynthesis. The reaction was investigated with several sterically demanding groups in the 5-position of the furan starting material. The influence of the reaction time and the catalyst on the yield was investigated.