A "wet chemistry" approach for isolation of 211 At from an irradiated bismuth target is described. The approach involves five steps: (1) dissolution of bismuth target in conc. HNO 3 ; (2) removal of the HNO 3 by distillation; (3) dissolution of residue in 8 M HCl; (4) extraction of
Power of light: 1,4‐dicyanonaphthalene (DCN) and light directly activates benzylic CH bonds for intra‐ and intermolecular CO bond formation. Arylalkyls have also been transformed directly into aryl ketones using water as a source of oxygen. EDG=electron‐donating group, EWG=electron‐withdrawing group.
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