Synthesis of 4H-cyclopenta[c]furan-5(6H)-one derivatives
2020
Tu, Xianxia | Peng, Haiyun | Deng, Guisheng
In Ph₃PAuCl/AgOTf/TsOH system, 2-diazo-5-alkynyl-1,7-diketo carbonyl compounds were transformed into diazo furans. Rh₂(OAc)₄-mediated conversion of the diazo furan derivatives into 4H-cyclopenta[c]furan-5(6H)-one derivatives was accomplished via C(sp²)−H insertion reaction at 4-position on the furan ring.
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