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2. Synthesis of the First Thieno[3,4-c]thiophene Stabilized Only by Electronic Effects
3. Efficient and Facile Syntheses of [4,5]-Annelated Pyridazines from 4-Pyridazinecarbaldehydes
4. Chemistry of 1,2,5-thiadiazoles. III. [1,2,5]thiadiazolo[3,4-c][1,2,5]thiadiazole
5. Bis([1,2,5]thiadiazolo)[3,4-b;3?,4?-e]pyrazine, a Novel 14?-Electron Heterocycle with High Electron Affinity