title: Diastereomeric cyclic tris-allenes.
abstract: Both diastereomers of the tris-allene, cyclododeca-1,2,5,6,9,10-hexaene have been obtained using a triple cyclopropylidene-allene rearrangement. On the NMR timescale, one has D3 symmetry, and is the smallest hydrocarbon synthesised to have this symmetry, and the second has C2 symmetry.
authors: School of Chemistry, Bangor University, Bangor, Gwynedd, Wales, UK LL57 2UW.
authors: Hussein H
authors: HH
authors: Mustafa
authors: Mark S
authors: MS
authors: Baird
authors: Juma'a R
authors: JR
authors: Al Dulayymi
authors: Viacheslav V
authors: VV
authors: Tverezovskiy
mesh_terms: D000466:Alkadienes / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D011789:Quantum Theory; D013237:Stereoisomerism
chemical_list: D000466:Alkadienes; C025947:propadiene