title: Formal homologous aldol reactions: interrupting the Nazarov cyclization via carboalkoxylation of alkynes.
abstract: Reactions between 1,4-pentadien-3-ones and aryl acetylenes in the presence of BF3·OEt2 furnish α-phenacyl cyclopentanones via a domino electrocyclization/carboalkoxylation reaction sequence. The overall process underscores a new mode of interrupted Nazarov trapping, where two new carbon-carbon bonds are installed with concomitant formation of carbonyl functionality.
authors.affiliation: Department of Chemistry, University of Alberta , E3-43 Gunning-Lemieux Chemistry Center, Edmonton, AB T6G 2G2, Canada.
authors.forename: Yen-Ku
authors.initials: YK
authors.lastname: Wu
authors.forename: F G
authors.initials: FG
authors.lastname: West