8-benzyl-6-chloromethyl-1,4-dioxa-8-aza-spiro[4.5]decane
1-benzyl-4-oxo-piperidine-3-carboxylic acid methyl ester
8-benzyl-1,4-dioxa-8-aza-spiro[4.5]decane-6-carboxylic acid methyl ester
4-flourophenylmagnesium bromide
(8-benzyl-1,4-dioxa-8-aza-spiro[4.5]dec-6-yl)-acetonitrile