A Tandem Conjugate Addition–Intramolecular Horner–Wadsworth–Emmons Olefination Approach to the Synthesis of Cyclopentene[c]chroman-2-ones and Cyclopent-1-enecarboxylates

Henryk Krawczyk, Dariusz Deredas, Krzysztof Huben, Waldemar Maniukiewicz
2013 Synlett : Accounts and Rapid Communications in Synthetic Organic Chemistry  
A strategically new approach to cyclopentene[c]chroman-2-ones and cyclopent-1-enecarboxylates by tandem Michael-Horner-Wadsworth-Emmons reaction of 2,5-hexanedione with 3-(diethoxyphosphoryl)coumarins is described. The products were obtained as single diastereoisomers in high yields.
doi:10.1055/s-0033-1340347 fatcat:hakxzrvj3fdovovgkjugvpgxp4