Synthesis of Benzo[c]thiophene Analogs Containing Benzimidazole,Benzothiazole, and Oxazole

Iodine-mediated cyclization of benzo[c]thiophene aldehyde with 1,2-diphenylamine/2-aminophenylthiol led to the formation of benzimidazole/benzothiazole-incorporated benzo[c]thiophenes. Similarly, reaction of benzo[c]thiophene aldehyde with p-toluenesulfonylmethyl isocyanide (TOSMIC) reagent in the presence of K₂CO₃ as a base furnished oxazole-containing benzo[c]thiophene analogs.     

Synthesis of Co‐doped CeO2 nanorods modified glassy carbon electrode for electrochemical detection of nitrobenzene

CeO₂ nanoparticles (CNPs), Co‐doped CeO₂ nanoparticles (CCNPs) and Co‐doped CeO₂ nanorods (CCNRs) were synthesized by simple co‐precipitation method and explored their sensing behaviour towards nitrobenzene. XRD and TEM analysis confirmed the presence of cubic fluorite structure of the CNPs, CCNPs and CCNRs. EDX analysis confirmed the presence of Cobalt in CeO₂ nanorods. The electrochemical sensing of nitrobenzene was carried out using CCNRs‐modified glassy carbon (GC) electrodes by means of cyclic voltammetric (CV) technique. The peak current (I_p) was found to be linearly co‐related to nitrobenzene (NB) concentration (R² = 0.9665). A substantial enhancement in cathodic peak current (C1), and sensitivity (∼738.8 nA/μM) was observed for the CCNRs‐modified GC electrode than those of CNPs and CCNPs‐modified electrodes.