title: Gold(III) porphyrin-catalyzed cycloisomerization of allenones.
abstract: [reaction: see text] Gold(III) porphyrin-catalyzed cycloisomerization of allenones gave the corresponding furans in good to excellent yields (up to 98%) and with quantitative substrate conversions. By recovering the Au(III) catalyst, a recyclable catalytic system is developed with over 8300 product turnovers attained for the cycloisomerization of 1-phenyl-buta-2,3-dien-1-one. The versatility of the gold(III) porphyrin catalyst was exemplified by its application to the hydroamination and hydration of phenylacetylene in 73% and 87% yield, respectively.
authors.affiliation: Department of Chemistry, The University of Hong Kong, Hong Kong.
authors.forename: Cong-Ying
authors.initials: CY
authors.lastname: Zhou
authors.forename: Philip Wai Hong
authors.initials: PW
authors.lastname: Chan
authors.forename: Chi-Ming
authors.initials: CM
authors.lastname: Che