Palladium‐Catalyzed Cross‐Coupling of Furfuryl Alcohols with Arylboronic Acids
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Aromatization‐Driven Carbon−Carbon Bond Cleavage to Synthesize 5‐Arylfurfuryl Alcohols and 2,5‐Diaryl Furans
作者:Guanghao Huang、Biaolin Yin
DOI:10.1002/adsc.201900799
日期:2019.12.17
Herein we report a protocol for novel palladium‐catalyzed cross‐coupling reactions of sustainably produced primary furfuryl alcohols with arylboronicacids to deliver 5‐arylfurfuryl alcohols and 2,5‐diaryl furans. Hammett plot analysis suggested that the reaction mechanism involved aromatization‐driven cleavage of the carbon−carbon bond of a furan oxonium ion intermediate. This protocol provides a
Atom‐economic Approach to the Synthesis of α‐(Hetero)aryl‐substituted Furan Derivatives from Biomass
作者:Leonid V. Romashov、Kirill S. Kozlov、Matvey K. Skorobogatko、Alexander Y. Kostyukovich、Valentine P. Ananikov
DOI:10.1002/asia.202101227
日期:2022.1.3
HMF core) and atom-economic cycloaddition process (to avoid waste on the aromatic ring formation step) was implemented to access (hetero)aryl-substituted furanderivatives. The present study points out a possible direction to increase the synthetic potential of biomass processing in the preparation of fine chemicals and suggests a plausible connection with molecular electronics area.
Direct β-Arylation of Furans with Aryl Iodides Catalyzed by Dinuclear Palladium Complexes
作者:Naofumi Tsukada、Takahiro Goto、Hayate Kato
DOI:10.3987/com-17-13824
日期:——
Dinuclear palladium complexes formed by a chelate-bridging ligand showed beta-selectivity in the direct arylation of furans with iodoarenes. In contrast, the arylation using PPh3, or bpy as ligands gave alpha-arylfurans as major products. The arylation can be applied to several furans bearing functional groups except electron-withdrawing groups.