An effective route to multisubstituted cyclohexanes has been developed by exploiting the Diels–Alder reaction of easily available dienes within a dioxanone moiety with electron-deficient dienophiles.
One-Pot Synthesis of Functionalized Benzotropones via a Phthalide Ring-Opening/Intramolecular Aldol Condensation Cascade
作者:Sangeun Yeom、Ken Ohmori
DOI:10.1021/acs.orglett.4c01530
日期:2024.6.21
A one-potprotocol was developed for the synthesis of functionalized benzotropone derivatives via a nucleophilic phthalide ring opening by a 5-lithiated dioxinone derivative, followed by an intramolecularaldolcondensation. The method demonstrates exceptional versatility with diverse substrates, yielding a variety of functionalized benzotropones. Subsequent transformations of the obtained benzotropone