Perylene Synthesis by the Parallel Cycloaromatization of Adjacent Enediynes
摘要:
[GRAPHICS]As part of an investigation into new synthetic routes to poly(peri-naphthalene), the synthesis and cycloaromatization of tetraethynylbiphenyls is described. The temperature dependent cyclization of biphenyls containing unsubstituted alkynes provides the desired perylene in good yield.
Perylene Synthesis by the Parallel Cycloaromatization of Adjacent Enediynes
摘要:
[GRAPHICS]As part of an investigation into new synthetic routes to poly(peri-naphthalene), the synthesis and cycloaromatization of tetraethynylbiphenyls is described. The temperature dependent cyclization of biphenyls containing unsubstituted alkynes provides the desired perylene in good yield.
Abstract PtCl2-catalyzed cyclization of o-diethynylbenzene derivatives bearing a hydroxyethyl group yielded naphthofuran derivatives by initial intramolecular cyclization of the hydroxy group to an activated ethynyl group followed by attack of the second ethynyl group to a vinylplatinum intermediate. When the ethynyl terminal is substituted by a hydroxypropyl group, not only homologous naphthodihydropyran