Transition-Metal-Catalyzed Domino Reactions: Efficient One-Pot Regiospecific Synthesis of Highly Functionalized Polysubstituted Furans from Electron-Deficient Alkynes and 2-Yn-1-ols
作者:Huanfeng Jiang、Hua Cao、Huawen Huang
DOI:10.1055/s-0030-1258461
日期:2011.4
Based on the reactive behavior of different transition-metal catalysts, three methods for the synthesis of highly functionalized polysubstituted furan derivatives are presented: (i) copper(I) iodide catalyzed regiospecific synthesis of furan aldehydes/ketones from alkynols and diethyl but-2-ynedioate under atmospheric pressure; (ii) nano-Cu2O-catalyzed domino process for the regioselective synthesis
Transition metal‐catalyzed domino reactions have been used as powerful tools for the preparation of polysubstituted furans in a one‐pot manner. In this paper, an efficient synthetic method was developed for the construction of tri‐ or tetrasubstituted furans from electron‐deficient alkynes and 2‐yn‐1‐ols by a silver‐catalyzed domino reaction. It is especially noteworthy that a 2,3,5‐trisubstituted
Synthesis of 3-Carbonyl Trisubstituted Furans via Pd-Catalyzed Aerobic Cycloisomerization Reaction: Development and Mechanistic Studies
作者:Amanda A. Barboza、Attilio Chiavegatti Neto、Isac G. Rosset、Guilherme A. M. Jardim、Marco A. B. Ferreira
DOI:10.1021/acs.joc.0c02777
日期:2021.3.5
we report the synthesis of 3-carbonyl-trisubstituted furans via Pd-catalyzed oxidative cycloisomerization reactions of 2-alkenyl-1,3-dicarbonyl scaffolds, using molecular oxygen as the sole oxidant to regenerate active palladium catalytic species, featuring good functional tolerance and mild reaction conditions. Deep investigation of intermediates and transition states of the reaction mechanism were
The Rearrangement of <i>tert</i>-Butylperoxides for the Construction of Polysubstituted Furans
作者:Xiaojian Zheng、Shenglin Lu、Zhiping Li
DOI:10.1021/ol402509u
日期:2013.11
The Brønsted acid catalyzed rearrangement of tert-butyl peroxides provides a new strategy to construct 2,3-disubstituted furans via 1,2-aryl migration. In addition, tert-butyl peroxides could also be transformed into 2,3,5-trisubstituted or 2,5-disubstitutedfuransthrough a sequence of base-catalyzed Kornblum–DelaMare rearrangements and acid-promoted Paal–Knorr reactions.
Palladium-Catalyzed Oxidative Alkoxylation of α-Alkenyl β-Diketones To Form Functionalized Furans
作者:Xiaoqing Han、Ross A. Widenhoefer
DOI:10.1021/jo035576w
日期:2004.3.1
and a stoichiometric amount of CuCl2 (2.2 equiv) in dioxane at 60 °C for 12 h formed 3-isobutyryl-2-isopropyl-5-methylfuran in 77% isolated yield. A number of α-alkenyl β-diketones underwent oxidativealkoxylation under these conditions to form 2,3,5-trisubsituted furans in moderate to good yield.