Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... The synthesis of several phenanthrenes and carbazoles utilising a novel reaction mediated by potassium t-butoxide and light through a quartz filter is described. ... The synthesis of a number of phenanthrenes and carbazoles utilising a novel reaction mediated by potassium t- ...