Synthesis of Benz[1,2-a]aceanthrylene from Triptycene via Flash Vacuum Thermolysis

Abstract

Benz[1,2-a]aceanthrylene is prepared from triptycene in 60 % yield by flash vacuum thermolysis at 875° C.

Notes

Alternative pathways involving stepwise loss of hydrogen atoms can be envisaged. We have chosen to illustrate the biradical BR as an intermediate to keep the mechanistic picture simple in the absence of corroborating information suggesting alternative routes.