title: Construction of Azabicyclo[6.4.0]dodecatrienes Based on Rhodium(I)-Catalyzed Intramolecular [6+2] Cycloaddition between Azetidine, Allene, and Alkynes.
abstract: Treatment of the allenylazetidine-alkynes with a catalytic amount of [RhCl(CO)dppp]2 (dppp: 1,3-bis(diphenylphosphino)propane) effected the intramolecular hetero-[6+2]-type ring-closing reaction via the C-C bond cleavage of the azetidine ring to produce azabicyclo[6.4.0]dodecatriene derivatives in good to excellent yields. The formation of the oxa analogue could also be achieved.
authors.affiliation: Division of Pharmaceutical Sciences, Graduate School of Medical Sciences, Kanazawa University.
authors.forename: Shigeo
authors.initials: S
authors.lastname: Yasuda
authors.forename: Haruna
authors.initials: H
authors.lastname: Yokosawa
authors.forename: Chisato
authors.initials: C
authors.lastname: Mukai
mesh_terms: D000466:Alkadienes / Q000737:chemistry*; D000480:Alkynes / Q000737:chemistry*; D053961:Azabicyclo Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D001384:Azetidines / Q000737:chemistry*; D002384:Catalysis; D003500:Cyclization; D015394:Molecular Structure; D012238:Rhodium / Q000737:chemistry*
chemical_list: D000466:Alkadienes; D000480:Alkynes; D053961:Azabicyclo Compounds; D001384:Azetidines; C082735:azetidine; C025947:propadiene; D012238:Rhodium