title: Stereospecific and stereoselective rhodium(I)-catalyzed intramolecular [2+2+2] cycloaddition of allene-ene-ynes: construction of bicyclo[4.1.0]heptenes.
abstract: Treatment of the allene-ene-yne substrates with [{RhCl(CO)2}2] effected the intramolecular [2+2+2]-type ring-closing reaction to produce various of tri- and tetracyclic derivatives containing a cyclopropane ring. The reaction is highly stereoselective as well as stereospecific with good to excellent yields.
authors.affiliation: Division of Pharmaceutical Sciences, Graduate School of Medical Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192 (Japan).
authors.forename: Yuu
authors.initials: Y
authors.lastname: Ohta
authors.forename: Shigeo
authors.initials: S
authors.lastname: Yasuda
authors.forename: Yuka
authors.initials: Y
authors.lastname: Yokogawa
authors.forename: Kei
authors.initials: K
authors.lastname: Kurokawa
authors.forename: Chisato
authors.initials: C
authors.lastname: Mukai
mesh_terms: D000480:Alkynes / Q000737:chemistry; D001643:Bridged Bicyclo Compounds / Q000737:chemistry*; D002384:Catalysis; D061565:Cycloaddition Reaction; D003521:Cyclopropanes / Q000737:chemistry; D012238:Rhodium / Q000737:chemistry*; D013237:Stereoisomerism
chemical_list: D000480:Alkynes; D001643:Bridged Bicyclo Compounds; D003521:Cyclopropanes; C030797:cyclopropane; D012238:Rhodium
keywords: alkynes; allenes; cycloadditions; diastereoselectivity; rhodium