Eder J. Lenardão was born in 1968 in Sabáudia PR, Brazil. He reveived his BS from State University of Londrina and MS degree from Federal University of Santa Maria under the guidance of Prof. Claudio C. Silveira. In 1997, he earned a PhD degree in organic chemistry at University of São Paulo, under the guidance of Prof. Miguel J. Dabdoub and in 2003 he worked with Prof. Antonio L. Braga at UFSM as a postdoctoral fellow. In 1997, he obtained a position at the Federal University of Pelotas-RS (southern Brazil) as Professor of Organic and Green Chemistry. In 2015-2016 he spent a year as visiting professor at University of Perugia (Italy) joining to Prof Claudi Santi’s group. His research interest lies in the area of organic chemistry and green chemistry. Claudio Santi received his PhD under the supervision of prof M. Tiecco in 1996. After a post doc at Basel University in the group of Thomas Wirth he becomes assistant professor at University of Perugia in 2002 and aggregate professor in 2005. In 2013 he received national habilitation as full professor and started to lead the group of Catalysis and Organic Green Chemistry at the dpt of Pharmaceutical Sciences. He is cofounder and chairman of the international Scientific Networkork SeSRedCat (Selenium Sulfur and Redox Catalysis) and in November 2018 he will receive the honorary professorship of Jan Dlugosz University in Czestochowa (PL). Gelson Perin received his undergraduate education (1994), MSc (1996) and PhD thesis (2000) at Federal university of Santa Maria (Brazil) under the direction of Prof. C. C. Silveira. In 2004, he obtained a position at the Federal University of Pelotas-RS as Professor of Organic Chemistry. His research interests are focused in the synthesis of organochalcogen compounds using new cleaner approaches. Diego Alves received his B.S. (2002), Master (2004) and PhD (2008) degrees at Federal University of Santa Maria (Brazil) under the supervision of Prof. Gilson Zeni and in 2008 he worked with Prof. Helio A. Stefani at Universidade de São Paulo (Brazil) as a postdoctoral fellow. After that, he took up the position of Adjunct Professor at Federal University of Pelotas, Brazil, and joined to the Laboratory of Clean Organic Synthesis Group (LASOL UFPel). His research line involves the development of green procedures to prepare organochalcogen compounds with biological activities; the use of atom-efficient reactions (click-chemistry); copper, palladium, silver and nickel catalysis; and reactions with organoboron reagents.