Ru-Catalyzed Synthesis of Dihydrofuroquinolines from Azido-cyclopropyl Ketones
摘要:
An efficient Ru-catalyzed synthesis of dihydrofuroquinolines from azido-cyclopropyl ketones via the reduction-cyclization-rearrangement process is reported. A plausible reaction mechanism for this process is depicted. Additionally, when the reaction was carried out under H-2 (1 atm) In the presence of Pd/C, 4-quinolones were obtained in excellent yields.
Acid‐Mediated Condensation of 2‐Aminoaryl Cyclopropyl Ketones with Aldehydes for the Synthesis of 2,3‐Dihydrofuro[3,2‐c]quinolines
作者:Wenbo Cai、Cong Zhang、Xin Wang、Chuanjun Song
DOI:10.1002/adsc.202400263
日期:2024.6.10
A method for the synthesis of 2,3-dihydrofuro[3,2-c]quinolines via TfOH or TMSOTf mediated condensation of 2-aminoaryl cyclopropyl ketones with aldehydes has been developed. The reaction proceeds under transition metal or halogen free conditions, giving access to the target molecules in 27-90% isolated yields. Mechanistic study indicates that the reaction sequence involves imine formation, intramolecular