Chemoenzymatic and Enantiomeric Switching Regimes Enabling the Synthesis of Homochiral Cyclohexa-2,5-dienones Incorporating All-Carbon Quaternary Centers

Autor: Sebastian Ye, Martin G. Banwell
Rok vydání: 2021
Předmět:
Zdroj: The Journal of Organic Chemistry. 86:15403-15412
ISSN: 1520-6904
0022-3263
DOI: 10.1021/acs.joc.1c01931
Popis: The enantiomerically pure, bromobenzene-derived metabolite 5 has been transformed into enone 20 using a reaction sequence involving Suzuki-Miyaura cross-coupling and Eschenmoser-Claisen rearrangement processes. Treatment of compound 20 with lithium hydroxide results in an acetonide fragmentation reaction that delivers the 4,4-disubstituted cyclohexa-2,5-dienone 21, reductive de-oxygenation of which leads to congener 22. A closely related sequence of reactions can be used to convert the same homochiral starting material 5 into compound ent-22.
Databáze: OpenAIRE