Synthesis of β-telluroamines 3 and β-thioamines 4^a,b.

^aReaction scale: 2-oxazolidinone 1 (1.0 mmol), diorganoyl dichalcogenide (1.2 equiv., 0.60 mmol), NaBH₄ (3.0 equiv., 3.0 mmol, 0.114 g), THF (7.0 mL) and EtOH (95.0%, 0.6 mL).

^bIsolated yields.