A Tandem [3+2] Cycloaddition-Elimination Cascade Reaction to Generate Pyrrolo-[3,4-c]pyrrole-1,3-diones
摘要:
An efficient tandem [3+2] cycloaddition-elimination cascade sequence has been developed enabling assembly of the pharmacologically relevant pyrrolo-[3,4-c]pyrrole-1,3-dione chemotype. The strategy involves simple mixing of readily accessible oxazolin-2-ones and pyrrole-2,5-diones in the presence of base under mild conditions, rendering the title compounds in typically excellent yields. Of note, this route allows for installation of three points of diversity and is ideal for combinatorial applications and parallel synthesis production campaigns.
Pericyclic Cascade Reactions Affording Thienyl- and Benzo[<i>b</i>]thienyl-Fused Architectures: A Synthetic and Density Functional Theory Analysis of Asynchronous Diels–Alder Reactions of Thioarylmaleimides
作者:Jayden Price、Tabassom Tallaie、Sara Eisler
DOI:10.1021/acs.joc.3c01797
日期:2024.2.2
Herein, we report the synthesis and characterization of a series of thioarylmaleimides and their varied propensity toward highly selective domino Diels–Alder (D–A)/rearrangement, D–A/ene/elimination, and D–A/oxidation reactions to give three types of thienyl-fused architectures. Stereochemical assignment was achieved using a combination of nuclear magnetic resonance (NMR) studies, gauge independent atomic