A Comparative Study on the Synthesis of the 1H(1)Benzothieno(2,3-d)- imidazole and 1H(1)Benzothieno(2,3-d)-v-triazole.

Alternate routes for the synthesis of the new title compounds are described. The experimental procedure for the isolation of the unstable 2,3-diaminobenzo[b]thiophene as the dichloride salt is presented.