1145987-33-2Relevant articles and documents
Gold-catalyzed formation of C-O and C-C bonds: An efficient domino reaction synthesis of functionalized furans
Guo, Pengfeng
, p. 58 - 60 (2015)
An efficient gold-catalyzed domino reaction for the synthesis of furan derivatives from haloalkynes has been described. This transformation has provided a new route for the formation of C-O and C-C bonds that prepare functionalized furans.
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.).
A general approach to arylated furans, pyrroles, and thiophenes
Zheng, Qingwei,Hua, Ruimao,Jiang, Jianhua,Zhang, Lei
, p. 8252 - 8256 (2015/03/05)
A general and practical synthetic method for aryl-substituted five-membered heterocycles has been developed. In the presence of KOH (30%), 1,4-diaryl-1,3-butadiynes undergo the cyclocondensation reaction with water, primary amines, and Na2S·9H2O in DMSO at 80 °C to afford 2,5-diarylfurans, 1,2,5-trisubstituted pyrroles, and 2,5-diarylthiophenes in good to high yields. Further studies have disclosed that aryl-substituted five-membered heterocycles can be also synthesized by a one-pot, two-step strategy from the terminal alkynes in DMSO firstly catalyzed by CuCl, and then via addition of KOH to promote the cyclocondensation of 1,3-butadiynes generated in situ.