1: NaOMe / dimethylformamide / 0.5 h / 80 °C 2: 98 percent / H2 / 5percent Pd/C / ethyl acetate / 3 h / 20 °C / 3750.3 Torr View Scheme

1: H2 / Pd-C / ethanol 2: (i) KOtBu, DMF, (ii) /BRN= 471223/, toluene View Scheme

1: diethyl lt;3,5-bis(benzyloxy)benzylgt;phosphonate With sodium hydride in tetrahydrofuran 0.0833333 h; Inert atmosphere; 2: 4-phenylmethyloxybenzaldehyde in tetrahydrofuran 1 h; Inert atmosphereReflux;