title: A novel chromium(0)-promoted four-component cycloaddition reaction.
abstract: [formula: see text] Reaction of (eta 6-thiepin-1,1-dioxide)tricarbonylchromium(0) with excess terminal alkynes under photoactivation conditions affords novel pentacyclic adducts formally derived from a sequential [6 pi + 2 pi]/[6 pi + 2 pi]/[2 sigma + 2 pi] cycloaddition process.
authors.affiliation: Department of Chemistry, Wayne State University, Detroit, Michigan 48202-3489, USA. jhr@chem.wayne.edu
authors.forename: J H
authors.initials: JH
authors.lastname: Rigby
authors.forename: C R
authors.initials: CR
authors.lastname: Heap
authors.forename: N C
authors.initials: NC
authors.lastname: Warshakoon
authors.forename: M J
authors.initials: MJ
authors.lastname: Heeg
mesh_terms: D000480:Alkynes / Q000737:chemistry; D002715:Chlormadinone Acetate / Q000138:chemical synthesis*; D002857:Chromium / Q000737:chemistry*; D003277:Contraceptives, Oral, Combined / Q000138:chemical synthesis; D003500:Cyclization; D008656:Mestranol / Q000138:chemical synthesis*; D009942:Organometallic Compounds / Q000737:chemistry; D010777:Photochemistry
chemical_list: C410137:(mu-6-thiepin-1,1-dioxide)tricarbonylchromium; D000480:Alkynes; D003277:Contraceptives, Oral, Combined; D009942:Organometallic Compounds; D002857:Chromium; D002715:Chlormadinone Acetate; C002785:Ovosiston; D008656:Mestranol