for the following products
(S)-tert-Butyl (5-benzyl-5-azaspiro[2.4]heptan-7-yl)carbamate | [(7S)-5-(Phenylmethyl)-5-azaspiro[2.4]hept-7-yl]carbamic acid tert-butyl ester and [(7S)-5-(phenylmethyl)-5-azaspiro[2.4]hept-7-yl]-carbamic acid 1,1-dimethyl ethyl ester