9-O-tert-butyl 5-O-methyl 5-phenylselanyl-9-azabicyclo[4.2.1]nonane-5,9-dicarboxylate

diethyl 2-methyl-2-phenylselanylpropanedioate

ethyl 2-bromo-2-phenylselanylacetate

ethyl 2,2-bis(phenylselanyl)acetate

[diethoxyphosphoryl(phenylselanyl)methyl]benzene