Atypical Dearomative Spirocyclization of β-Naphthols with Diazoacetamides Using a Silver Catalyst
Haruka Homma, Shingo Harada, Tsubasa Ito, Ayaka Kanda, Tetsuhiro Nemoto
Abstract
A chemoselective dearomatization of the less reactive benzenoid unit in β-naphthol was developed. Spirocyclization with a reductant constructs a pivotal structure for drug candidates. One-pot oxidative conversion enabled the tandem dearomatization of β-naphthol, producing conjugated tetraenone variants. The potential utility of the product as an F–-selective anion sensor was also demonstrated. Theoretical studies revealed the intermediacy of silver-carbenoid species leading to chemoselective spirocyclization over arene cyclopropanation.
Topics & Concepts
ChemistryCyclopropanationCarbenoidConjugated systemTandemCatalysisCombinatorial chemistryOrganic chemistryRhodiumPolymerComposite materialMaterials scienceCyclopropane Reaction MechanismsCatalytic C–H Functionalization MethodsAxial and Atropisomeric Chirality Synthesis