title: Photoinduced atom-transfer cyclization of alpha-iodocycloalkanones bearing an allenyl side chain.
abstract: [reaction: see text] Irradiation of alpha-iodocycloalkanones bearing an allenyl side chain with a sunlamp effected atom-transfer cyclization to give cyclized products in good yield. A mechanism, involving radical atom-transfer cyclization accompanied by 1,5- and 1,4-hydrogen transfers, is proposed.
authors.affiliation: Department of Chemistry, National Tsing Hua University, Hsinchu 300, Taiwan, ROC.
authors.forename: Hsien-Hsun
authors.initials: HH
authors.lastname: Lin
authors.forename: Wen-Sheng
authors.initials: WS
authors.lastname: Chang
authors.forename: Shun-Yuan
authors.initials: SY
authors.lastname: Luo
authors.forename: Chin-Kang
authors.initials: CK
authors.lastname: Sha