A straightforward synthesis of functionalized 6 H-benzo [c] chromenes from 3-alkenyl chromenes by intermolecular Diels–Alder/aromatization sequence

M Ballarotto, M Solinas, A Temperini - Organic & Biomolecular …, 2021 - pubs.rsc.org
A new and metal-free approach to the synthesis of substituted 6H-benzo [c] chromenes has
been developed. This three-step synthetic sequence starts from variously substituted …

Six-membered ring systems: With O and/or S atoms

CMM Santos, AMS Silva - Progress in Heterocyclic Chemistry, 2021 - Elsevier
The most interesting chemistry published in 2020 on the synthesis of O-and S-six-membered
heterocycles is reviewed. This personal overview is focused on the developments made on …

Rh2 (esp) 2-Catalyzed Redox/Cycloaddition Cascade of Diazoacetoacetate Enones with N-Methyl Nitrones: Diastereoselective Synthesis of β-Lactams with Two …

Y Zhao, R Xu, Z Xu, X Xu - Synthesis, 2022 - thieme-connect.com
A Rh 2 (esp) 2-catalyzed diastereoselective synthesis of highly functionalized β-lactams is
developed. By employing Rh 2 (esp) 2 as the catalyst, a reaction cascade operates by …

Syntheses of polyfunctional aromatic compounds from non-aromatic precursors

T Mies, TK Ma, AGM Barrett - Russian Chemical Reviews, 2020 - iopscience.iop.org
Syntheses of polyfunctional benzene derivatives from both cyclic and acyclic non-aromatic
precursors are reviewed. Such aromatizations include transformations that use Diels–Alder …