Synthesis of Tricyclic Heterocycles via a Tandem Aryl Alkylation/Heck Coupling Sequence
摘要:
A norbornene-mediated palladium-catalyzed sequence is described in which two alkyl-aryl bonds and one alkenyl-aryl bond are formed in one pot with use of microwave irradiation. A variety of symmetrical and unsymmetrical oxygen-, nitrogen-, silicon-, and sulfur-containing tricyclic heterocycles were synthesized from a Heck acceptor and an aryl iodide containing two tethered alkyl halides. This approach was further applied to the synthesis of a tricyclic mescaline analogue.
Palladium-Catalyzed Alkylation-Alkenylation Reactions: Rapid Access to Tricyclic Mescaline Analogues
作者:Mark Lautens、Dino Alberico
DOI:10.1055/s-2006-941583
日期:2006.11
heterocycles were synthesized in good yields from a Heck acceptor and an aryl iodide containing two tethered alkyl bromides. This methodology was applied to the synthesis of a tricyclic mescaline analogue.
Dearomative Access to (−)-Thebaine and Derivatives
作者:Zachary A. Tolchin、Dallas M. Dukes、Leanna M. Gharbaoui、Joel M. Smith
DOI:10.1021/acs.orglett.3c03270
日期:2023.12.1
hinging on the dearomatization and coupling of simple aromatic starting materials. This provides divergent access to two unnatural opioid derivatives and is aimed at the long-term development of synthetic opioid analogs of the “wonderdrug” Naloxone. Additionally, a formal enantioselective synthesis of all reported targets is disclosed that leverages a catalytic asymmetric dearomatization via anion-pairing