8-Oxo-5-aza-spiro[2.5]octane-5-carboxylic acid benzyl ester,
1H NMR
STR 4 SEE BELOW
SEE SYNTHESIS AT……….http://orgspectroscopyint.blogspot.in/2015/07/8-oxo-5-aza-spiro25octane-5-carboxylic.html

1H NMR
STR 4 SEE BELOW
SEE SYNTHESIS AT……….http://orgspectroscopyint.blogspot.in/2015/07/8-oxo-5-aza-spiro25octane-5-carboxylic.html