Microwave Assisted Synthesis of Thiocarbamoylpyrazoles and Application as an Alternative Latent Fingermark Developers

Bruno da Rosa, Dalila Venzke, Taís Poletti, Nathalia de Lima, Jeanifer Camacho, Kristiane Mariotti, Marco dos Santos, Lucas Pizzutti, Neftalí Carreño, Claudio Pereira
2020 Journal of the Brazilian Chemical Society  
Fingerprints are unique to each individual, contributing to human identification in forensic cases. The powder technique being widely used is considered one of the most important in latent fingermarks analysis. In this sense, the present work aimed to synthesize 1-thiocarbamoyl-4,5dihydro-1H-pyrazoles and apply them as powder agents to develop latent fingermarks. The compounds were prepared from an effective and green synthesis via the condensation of chalcones with thiosemicarbazide in ethanol
more » ... arbazide in ethanol under microwave irradiation. Pyrazoles were tested and compared with a standard white powder (Sirchie ® ) on glass surfaces using sebaceous and natural fingermarks so that molecule 2c has been shown to be more promising providing image clarity. The derivatives of pyrazoles were promising as an alternative latent fingermark, presenting high quality images for fingermarks, proving to be a great tool for forensic sciences.
doi:10.21577/0103-5053.20200014 fatcat:qiqfys5jyjfmxn4qauzlfwc7oi