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Using iodine as catalyst to advance the sustainability of pharmaceutical syntheses Synthesizing pharmaceuticals for cancer, viral diseases, and other medical conditions is slow work. A particularly challenging chemical transformation is to start with what s known as an unactivated alkene a common molecular building block and end up with a vicinal diamine; i.e., installation of two nitrogen units into carbon carbon double bonds. The result is a chemical unit that s present in medications for influenza and colorectal cancer. Commonly, researchers must use rare, toxic metals and harsh reaction conditions to complete this transformation. Using a more sustainable catalyst for the reaction could solve such problems. Previous research has attempted to do so, yet with only limited success. ....