diethyl (4-[(t-butyldimethyl)silyloxymethyl]phenyl)methylphosphonate
diethyl 2-benzoylphenylmethylphosphonate
ethyl 4-(diethoxyphosphorylmethyl)benzoate
2-(diethoxy-phosphorylmethyl)-benzoic acid methyl ester
diethyl 4-N,N-dimethylaminobenzylphosphonate