Diversity-oriented synthesis of chromenopyrrolidines from azomethine ylides and 2-hydroxybenzylidene indandiones <i>via</i> base-controlled regiodivergent (3+2) cycloaddition
作者:Jhen-Kuei Yu、Han-Wei Chien、Yi-Jung Lin、Praneeth Karanam、Yu-Heng Chen、Wenwei Lin
DOI:10.1039/c8cc05693e
日期:——
An organobase-directed, regiodivergent 1,3-dipolar cycloaddition of azomethineylides and 2-hydoxybenzylidene indandiones is reported. The scarcely explored reversal of the nucleophilic site in azomethineylides has been exploited for their regiodivergent (3+2) cycloaddition, which subsequently resulted in two different cascade processes to generate functionally distinct chromenopyrrolidines in a diversity
Ionescu, Bulletin de la Societe Chimique de France, 1930, vol. <4> 47, p. 210,213
作者:Ionescu
DOI:——
日期:——
DMAP-Catalyzed Reaction of Diethyl 1,3-Acetonedicarboxylate with 2-Hydroxybenzylideneindenediones: Facile Synthesis of Fluorenone-Fused Coumarins
作者:Mohanad Shkoor、Raghad Bayari
DOI:10.1055/a-1385-2345
日期:2021.5
The base-catalyzed reaction of diethyl 1,3-acetonedicarboxylate with 2-hydroxybenzylidene indenediones was studied. The reaction provides a facile and expeditious protocol for the synthesis of natural product inspired fluorenone-fused coumarins in good to very good yields. This process resembles a combination of domino Michael–intramolecular Knoevenagel–aromatization–lactonization reactions in a single