The title compounds 3 were synthesized in one step from bisdithiocarbamates 2, and their structures were confirmed by two independent syntheses. Alkylation and hydrolysis of 3 gives 3,3′‐arylenebis(2,4‐dioxo‐1,2,3,4‐tetrahydroquinazolines) 8.
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Garı́n et al. (1990) studied this question.
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