Aerobic oxidative α-arylation of furans with boronic acids via Pd(<scp>ii</scp>)-catalyzed C–C bond cleavage of primary furfuryl alcohols: sustainable access to arylfurans
Aerobic oxidative α-arylation of furans with boronic acids via Pd(II)-catalyzed C–Cbondcleavage of primary furfuryl alcohol provides sustainable access to arylfurans. This α-arylation protocol opens a new avenue for the transformation of readily available furans into other useful compounds.
Brønsted acid-catalysed desilylative heterocyclisation to form substituted furans
作者:Emily G. Babcock、Md. Shafiqur Rahman、James E. Taylor
DOI:10.1039/d2ob01828d
日期:——
Heterocyclisation of tert-butyldimethylsilyl (TBS) protected γ-hydroxy-α,β-unsaturated ketones catalysed by para-toluenesulfonic acid (p-TSA) to form substituted furans is reported. The reaction proceeds undermildconditions at room temperature in methanol to give a range of furan products (21 examples, up to 98% yield). Mechanistic experiments suggest the reaction proceeds via in situ deprotection
Nickel catalysis synthesis of 2,5-disubstituted furans from aryl (alkyl) iodide
作者:Zhongqiang Sun
DOI:10.1080/10426507.2023.2249576
日期:2024.1.2
A new methodology using various aryl(alkyl)iodides and CaC2 as coupling partners has been developed for the successful preparation of 2,5-disubstitutedfurans in good to excellent yields. The broad...
A one-pot tandem Wittig/conjugate reduction/PaalKnorr reaction is reported for the synthesis of di- or trisubstituted furans. This novel sequence first demonstrates the possibility of successively recycling waste from upstream steps to catalyze downstream reactions.