S. Kittivarapong et al., STEREOSPECIFIC TANDEM MICHAEL ADDITION-ALDOL CONDENSATION-LACTONIZATION REACTIONS - A ROUTE TO SPIROCYCLOPENTENOLACTONE, Synthesis, (2), 1995, pp. 136-138
Spirocyclopentenolactone 7 was prepared in one pot from alpha-methylen
ecyclopentenone (1) via a tandem Michael addition-aldol condensation-l
actonization reactions.