- tert-butyl 3-amino-3-(cyanomethyl)azetidine-1-carboxylate
- tert-butyl 3-(hydroxymethyl)azetidine-1-carboxylate
- tert-butyl 3-(fluoromethyl)azetidine-1-carboxylate
- tert-butyl 3-(cyanomethylene)azetidine-1-carboxylate
- tert-butyl 3-(bromomethyl)-3-fluoroazetidine-1-carboxylate
- tert-butyl 3-((methylsulfonyl)oxy)azetidine-1-carboxylate