Improved Synthesis of 1,8-Diiodoanthracene and Its Application to the Synthesis of Multiple Phenylethynyl-Substituted Anthracenes

Abstract

1,8-Diiodoanthracene was synthesized from 1,8-dichloroanthraquinone in three steps by improved procedures in 41% overall yield. Some anthracene derivatives carrying multiple phenylethynyl groups were synthesized from 1,8-diiodoanthracene and 4,5-diiodo-9-anthrone.

Key words

halogenation - reduction - cross-coupling - ethynylation - anthracenes

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9

Although we carefully checked the purity of a sample of the compound for the melting point measurement, the observed temperature was lower than the literature value.