Direct Synthesis of Perylene-Fused Cyclic Ketones from Perylene and 2-Alkenoic Acids
作者:Marta Głodek、Anna Makal、Arkadiusz Kłys、Janusz Zakrzewski、Damian Plażuk
DOI:10.1002/ejoc.201600661
日期:2016.8
An efficient, one-pot methodology of direct synthesis of perylene-fused cyclic ketones from perylene and 2-alkenoic acids under acidic catalytic conditions has been developed. The reaction of perylene with 2,3-disubstituted 2-alkenoic acid leads, via Friedel–Crafts acylation followed by Nazarov cyclization, to the formation of disubstituted 5,6-dihydro-4H-cyclopenta[b]perylen-4-ones in high yield (up
已经开发出一种在酸性催化条件下由苝和 2-烯酸直接合成苝稠合环酮的高效、一锅法。苝与 2,3-二取代的 2-链烯酸反应,通过 Friedel-Crafts 酰化和 Nazarov 环化,形成二取代的 5,6-二氢-4H-环戊二烯-4-酮。产率(高达 97%)和高非对映选择性,而与丙烯酸的反应通过烷基化和分子内 Friedel-Crafts 酰化导致 2,3-二氢-1H-苯并[cd]perylen-1-one。