Ethyl 2-(diphenoxyphosphoryl)acetate

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of ethyl (diphenoxyphosphoryl)acetate (1.090 g, 3.403 mmol) in THF (15 mL) were added 1,8-diazabicyclo[5,4,0]undec-7-ene (0.520 g, 3.403 mmol) and NaI (0.510 g, 3.403 mmol) followed by a solution of tert-butyl 3-(2-amino-6-(2-(cyclopropylmethoxy)-6-[(4-methoxybenzyl)oxy]-phenyl}-3-formyl-4-pyridinyl)-1-piperidinecarboxylate (1.000 g, 1.701 mmol), obtained in the step (1) of Example 25-2, in THF (5 mL). The mixture was stirred at 0° C. for 1.5 hrs and quenched with saturated aqueous NaHCO3 solution. The mixture was extracted with ethyl acetate, and the extract was washed with brine, dried over Na2SO4, filtered, and concentrated under reduced pressure. The residue was purified by column chromatography on silica gel (hexane/ethyl acetate=3:2 to 1:2) to give tert-butyl 3-(2-{2-(cyclo-propylmethoxy)-6-[(4-methoxybenzyl)oxy]phenyl}-7-oxo-7,8-dihydro-1,8-naphthyridin-4-yl)-1-piperidinecarboxylate as an amorphous solid (0.276 g, 27%). quenched with saturated aqueous NaHCO3 solution The mixture was extracted with ethyl acetate the extract was washed with brine dried over Na2SO4 filtered concentrated under reduced pressure The residue was purified by column chromatography on silica gel (hexane/ethyl acetate=3:2 to 1:2)

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of ethyl (diphenoxyphosphoryl)acetate (1.090 g, 3.403 mmol) in THF (15 mL) were added 1,8-diazabicyclo[5,4,0]undec-7-ene (0.520 g, 3.403 mmol) and NaI (0.510 g, 3.403 mmol) followed by a solution of tert-butyl 3-(2-amino-6-(2-(cyclopropylmethoxy)-6-[(4-methoxybenzyl)oxy]-phenyl}-3-formyl-4-pyridinyl)-1-piperidinecarboxylate (1.000 g, 1.701 mmol), obtained in the step (1) of Example 25-2, in THF (5 mL). The mixture was stirred at 0° C. for 1.5 hrs and quenched with saturated aqueous NaHCO3 solution. The mixture was extracted with ethyl acetate, and the extract was washed with brine, dried over Na2SO4, filtered, and concentrated under reduced pressure. The residue was purified by column chromatography on silica gel (hexane/ethyl acetate=3:2 to 1:2) to give tert-butyl 3-(2-{2-(cyclo-propylmethoxy)-6-[(4-methoxybenzyl)oxy]phenyl}-7-oxo-7,8-dihydro-1,8-naphthyridin-4-yl)-1-piperidinecarboxylate as an amorphous solid (0.276 g, 27%). quenched with saturated aqueous NaHCO3 solution The mixture was extracted with ethyl acetate the extract was washed with brine dried over Na2SO4 filtered concentrated under reduced pressure The residue was purified by column chromatography on silica gel (hexane/ethyl acetate=3:2 to 1:2)

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of ethyl (diphenoxyphosphoryl)acetate (1.090 g, 3.403 mmol) in THF (15 mL) were added 1,8-diazabicyclo[5,4,0]undec-7-ene (0.520 g, 3.403 mmol) and NaI (0.510 g, 3.403 mmol) followed by a solution of tert-butyl 3-(2-amino-6-{2-(cyclopropylmethoxy)-6-[(4-methoxybenzyl)oxy]-phenyl}-3-formyl-4-pyridinyl)-1-piperidinecarboxylate (1.000 g, 1.701 mmol), obtained in the step (1) of Example 25-2, in THF (5 mL). The mixture was stirred at 0° C. for 1.5 hrs and quenched with saturated aqueous NaHCO3 solution. The mixture was extracted with ethyl acetate, and the extract was washed with brine, dried over Na2SO4, filtered, and concentrated under reduced pressure. The residue was purified by column chromatography on silica gel (hexane/ethyl acetate=3:2 to 1:2) to give tert-butyl 3-(2-{2-(cyclopropylmethoxy)-6-[(4-methoxybenzyl)oxy]phenyl}-7-oxo-7,8-dihydro-1,8-naphthyridin-4-yl)-1-piperidinecarboxylate as an amorphous solid (0.276 g, 27%). quenched with saturated aqueous NaHCO3 solution The mixture was extracted with ethyl acetate the extract was washed with brine dried over Na2SO4 filtered concentrated under reduced pressure The residue was purified by column chromatography on silica gel (hexane/ethyl acetate=3:2 to 1:2)

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of ethyl(diphenoxyphosphoryl)acetate (1.090 g, 3.403 mmol) in THF (15 mL) were added 1,8-diazabicyclo[5,4,0]undec-7-ene (0.520 g, 3.403 mmol) and NaI (0.510 g, 3.403 mmol) followed by a solution of tert-butyl 3-(2-amino-6-{2-(cyclopropylmethoxy)-6-[(4-methoxybenzyl)oxy]-phenyl}-3-formyl-4-pyridinyl)-1-piperidinecarboxylate (1.000 g, 1.701 mmol), obtained in the step (1) of Example 25-2, in THF (5 mL). The mixture was stirred at 0° C. for 1.5 hrs and quenched with saturated aqueous NaHCO3 solution. The mixture was extracted with ethyl acetate, and the extract was washed with brine, dried over Na2SO4, filtered, and concentrated under reduced pressure. The residue was purified by column chromatography on silica gel (hexane/ethyl acetate=3:2 to 1:2) to give tert-butyl 3-(2-{2-(cyclo-propylmethoxy)-6-[(4-methoxybenzyl)oxy]phenyl}-7-oxo-7,8-dihydro-1,8-naphthyridin-4-yl)-1-piperidinecarboxylate as an amorphous solid (0.276 g, 27%). quenched with saturated aqueous NaHCO3 solution The mixture was extracted with ethyl acetate the extract was washed with brine dried over Na2SO4 filtered concentrated under reduced pressure The residue was purified by column chromatography on silica gel (hexane/ethyl acetate=3:2 to 1:2)

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of ethyl (diphenoxyphosphoryl)acetate (1.090 g, 3.403 mmol) in THF (15 mL) were added 1,8-diazabicyclo[5,4,0]undec-7-ene (0.520 g, 3.403 mmol) and NaI (0.510 g, 3.403 mmol) followed by a solution of tert-butyl 3-(2-amino-6-{2-(cyclopropylmethoxy)-6-[(4-methoxybenzyl)oxy]-phenyl}-3-formyl-4-pyridinyl)-1-piperidinecarboxylate (1.000 g, 1.701 mmol), obtained in the step (1) of Example 25-2, in THF (5 mL). The mixture was stirred at 0° C. for 1.5 hrs and quenched with saturated aqueous NaHCO3 solution. The mixture was extracted with ethyl acetate, and the extract was washed with brine, dried over Na2SO4, filtered, and concentrated under reduced pressure. The residue was purified by column chromatography on silica gel (hexane/ethyl acetate=3:2 to 1:2) to give tert-butyl 3-(2-{2-(cyclopropylmethoxy)-6-[(4-methoxybenzyl)oxy]phenyl}-7-oxo-7,8-dihydro-1,8-naphthyridin-4-yl)-1-piperidinecarboxylate as an amorphous solid (0.276 g, 27%). quenched with saturated aqueous NaHCO3 solution The mixture was extracted with ethyl acetate the extract was washed with brine dried over Na2SO4 filtered concentrated under reduced pressure The residue was purified by column chromatography on silica gel (hexane/ethyl acetate=3:2 to 1:2)

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of ethyl (diphenoxyphosphoryl)acetate (1.090 g, 3.403 mmol) in THF (15 mL) were added 1,8-diazabicyclo[5,4,0]undec-7-ene (0.520 g, 3.403 mmol) and NaI (0.510 g, 3.403 mmol) followed by a solution of tert-butyl 3-(2-amino-6-(2-(cyclopropylmethoxy)-6-[(4-methoxybenzyl)oxy]-phenyl}-3-formyl-4-pyridinyl)-1-piperidinecarboxylate (1.000 g, 1.701 mmol), obtained in the step (1) of Example 25-2, in THF (5 mL). The mixture was stirred at 0° C. for 1.5 hrs and quenched with saturated aqueous NaHCO3 solution. The mixture was extracted with ethyl acetate, and the extract was washed with brine, dried over Na2SO4, filtered, and concentrated under reduced pressure. The residue was purified by column chromatography on silica gel (hexane/ethyl acetate=3:2 to 1:2) to give tert-butyl 3-(2-{2-(cyclo-propylmethoxy)-6-[(4-methoxybenzyl)oxy]phenyl}-7-oxo-7,8-dihydro-1,8-naphthyridin-4-yl)-1-piperidinecarboxylate as an amorphous solid (0.276 g, 27%). quenched with saturated aqueous NaHCO3 solution The mixture was extracted with ethyl acetate the extract was washed with brine dried over Na2SO4 filtered concentrated under reduced pressure The residue was purified by column chromatography on silica gel (hexane/ethyl acetate=3:2 to 1:2)