| Four acyclic enyne-allenes were synthesized for subsequent chemical elaborations through biradical intermediates. When (Z)-7-methyl-3-propyl-3,5,6-octatrien-1-yne, (Z)-3-butyl-7-methyl-3,5,6-octatrien-1-yne, (Z)-7-methyl-3-(3-methylbutyl)-3,5,6-octatrien-1-yne, and (Z)-9-ethynyl-13-methyl-1,9,11,12-tetradecatetraene were stirred at rt for 18 h in benzene, they underwent facile Myers cycloaromatization reactions to provide ;Seven acyclic enediynyl ethyl ethers were prepared by the Pd(PPh... |
