86049-38-9Relevant articles and documents
Palladium-Catalyzed Cross-Coupling of Furfuryl Alcohols with Arylboronic Acids via Aromatization-Driven Carbon?Carbon Bond Cleavage to Synthesize 5-Arylfurfuryl Alcohols and 2,5-Diaryl Furans
Huang, Guanghao,Yin, Biaolin
supporting information, p. 5576 - 5586 (2019/11/14)
Herein we report a protocol for novel palladium-catalyzed cross-coupling reactions of sustainably produced primary furfuryl alcohols with arylboronic acids 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 simple, practical way to transform 5-hydroxymethylfurfural into useful compounds. (Figure presented.).
Murai Reaction on Furfural Derivatives Enabled by Removable N,N′-Bidentate Directing Groups
Pezzetta, Cristofer,Veiros, Luis F.,Oble, Julie,Poli, Giovanni
supporting information, p. 8385 - 8389 (2017/06/28)
Furfural and related compounds are industrially relevant building blocks obtained from lignocellulosic biomass. To enhance the added value of these renewable resources, a Ru-catalyzed hydrofurylation of alkenes, involving a directed C?H activation at C3 of the furan ring, was developed. A thorough experimental study revealed that a bidentate amino-imine directing group enabled the desired coupling. Removal of the directing group occurred during the purification step, directly releasing the C3-functionalized furfurals. Development of the reaction as well as optimization and scope of the method were described. A mechanism was proposed on the basis of DFT calculations.
Trienamines derived from 5-substituted furfurals: Remote ε-functionalization of 2,4-dienals
Coelho, Jaime A. S.,Trindade, Alexandre F.,Andr, Vnia,Teresa Duarte,Veiros, Luis F.,Afonso, Carlos A.M.
supporting information, p. 9324 - 9328 (2014/12/11)
The selective ε-functionalization of 5-substituted furfurals via trienamine intermediates is reported herein. This methodology was successfully applied to several 5-substituted furfurals with different amines via formation of a trienamine through the furan ring. The rationalized reaction mechanism involves the addition of the trienamine intermediate to its corresponding iminium-ion producing new furan-containing scaffolds.