title: Photoswitchable enediynes: use of cyclopropenone as photocleavable masking group for the enediyne triple bond.
abstract: Cyclopropenone , 2,3-benzobicyclo[8.1.0]undec-1(10)-en-4-yn-11-one, is a thermally stable compound showing no signs of decomposition after heating at 84 degrees C for 7 d, UV irradiation of which results in an efficient (Phi(300)= 0.45) and quantitative formation of benzannelated enediyne , which undergoes Bergman cyclization at the above temperature.
authors.affiliation: Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, USA.
authors.forename: Andrei
authors.initials: A
authors.lastname: Poloukhtine
authors.forename: Vladimir V
authors.initials: VV
authors.lastname: Popik
mesh_terms: D000475:Alkenes / Q000138:chemical synthesis / Q000737:chemistry*; D000480:Alkynes / Q000737:chemistry*; D003521:Cyclopropanes / Q000737:chemistry* / Q000528:radiation effects; D006358:Hot Temperature; D015394:Molecular Structure; D010777:Photochemistry; D014466:Ultraviolet Rays
chemical_list: D000475:Alkenes; D000480:Alkynes; D003521:Cyclopropanes; C120343:cyclopropenone