Bromoderivatives of benzofused 1,2,5-thiadiazoles are important precursors for the synthesis dyes, which widely used to design effective photovoltaic materials. In this study, 4-bromobenzo[1,2-d:4,5-d′]bis([1,2,3]thiadiazole was selectively obtained from bromination benzo[1,2-d:4,5-d′]bis([1,2,3]thiadiazole. The structure newly synthesized compound established by means elemental analysis, high-...

Dibromoderivatives of benzofused chalcogen-nitrogen heterocycles are important precursors in the synthesis various photovoltaic materials. 4,7-Dibromobenzo[d][1,2,3]thiadiazole is a practically unexplored compound this series. In communication, it was shown that nucleophilic substitution 4,7-dibromobenzo[d][1,2,3]thiadiazole with morpholine gave selectively 4-substituted product—4-(7-bromobenzo...

Many problems can be formulated as search problems over a solution space S.17 That is, find the x 2 S such that some predicate P (x) is true. For example, hard problems such as the Hamiltonian path problem and Boolean satisfiability can be formulated this way. An unstructured search problem is a problem that makes no assumptions about the structure of the search space, or for which there is no ...