formyl formate

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

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

Procedure: To a solution of (2-{4-[6-Methoxy-7-methyl-3-oxo-4-(2-trimethylsilanyl-ethoxy)-1,3-dihydro-isobenzofuran-5-yl]-2-methyl-but-2-enylamino}-ethyl)-phosphonic acid diethyl ester (74 mg, 0.14 mmol) in formic acid (1 mL) was added formic anhydride (1 mL) and the solution was stirred at room temperature for 1 hour. The reaction mixture was concentrated and the crude product carried onto the next step. The NMR data of this compound shows two rotamers with the ratio of 70:30. 1H NMR (300 MHz, CDCl3) δ 0.05 (s, 9H), 1.18-1.28 (m, 2H), 1.28 and 1.30 (t, 6H, J=7 Hz), 1.74 (s, 3H), 1.84-2.08 (m, 2H), 2.19 (s, 3H), 3.34-3.45 (m, 2H), 3.47 (d, 2H, J=7 Hz), 3.72 and 3.87 (s, 2H), 3.78 and 3.79 (s, 3H), 4.06 and 4.07 (pent, 4H, J=7 Hz), 4.26-4.37 (m, 2H), 5.13 (s, 2H), 5.30-5.46 (m, 1H), 8.03 and 8.19 (s, 1H) ppm; 31P (121.4 MHz, CDCl3) δ 27.5 and 28.1 ppm; MS (m/z) 570.1 [M+H]+, 592.2 [M+Na]+. The reaction mixture was concentrated

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

Procedure: To a solution of (2-{4-[6-Methoxy-7-methyl-3-oxo-4-(2-trimethylsilanyl-ethoxy)-1,3-dihydro-isobenzofuran-5-yl]-2-methyl-but-2-enylamino}-ethyl)-phosphonic acid diethyl ester (74 mg, 0.14 mmol) in formic acid (1 mL) was added formic anhydride (1 mL) and the solution was stirred at room temperature for 1 hour. The reaction mixture was concentrated and the crude product carried onto the next step. The NMR data of this compound shows two rotamers with the ratio of 70:30. 1H NMR (300 MHz, CDCl3) δ 0.05 (s, 9H), 1.18-1.28 (m, 2H), 1.28 and 1.30 (t, 6H, J=7 Hz), 1.74 (s, 3H), 1.84-2.08 (m, 2H), 2.19 (s, 3H), 3.34-3.45 (m, 2H), 3.47 (d, 2H, J=7 Hz), 3.72 and 3.87 (s, 2H), 3.78 and 3.79 (s, 3H), 4.06 and 4.07 (pent, 4H, J=7 Hz), 4.26-4.37 (m, 2H), 5.13 (s, 2H), 5.30-5.46 (m, 1H), 8.03 and 8.19 (s, 1H) ppm; 31P (121.4 MHz, CDCl3) δ 27.5 and 28.1 ppm; MS (m/z) 570.1 [M+H]+, 592.2 [M+Na]+. The reaction mixture was concentrated

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

Procedure: To a solution of (2-{4-[6-Methoxy-7-methyl-3-oxo-4-(2-trimethylsilanyl-ethoxy)-1,3-dihydro-isobenzofuran-5-yl]-2-methyl-but-2-enylamino}-ethyl)-phosphonic acid diethyl ester (74 mg, 0.14 mmol) in formic acid (1 mL) was added formic anhydride (1 mL) and the solution was stirred at room temperature for 1 hour. The reaction mixture was concentrated and the crude product carried onto the next step. The NMR data of this compound shows two rotamers with the ratio of 70:30. 1H NMR (300 MHz, CDCl3) δ 0.05 (s, 9H), 1.18-1.28 (m, 2H), 1.28 and 1.30 (t, 6H, J=7 Hz), 1.74 (s, 3H), 1.84-2.08 (m, 2H), 2.19 (s, 3H), 3.34-3.45 (m, 2H), 3.47 (d, 2H, J=7 Hz), 3.72 and 3.87 (s, 2H), 3.78 and 3.79 (s, 3H), 4.06 and 4.07 (pent, 4H, J=7 Hz), 4.26-4.37 (m, 2H), 5.13 (s, 2H), 5.30-5.46 (m, 1H), 8.03 and 8.19 (s, 1H) ppm; 31P (121.4 MHz, CDCl3) δ 27.5 and 28.1 ppm; MS (m/z) 570.1 [M+H]+, 592.2 [M+Na]+. The reaction mixture was concentrated

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

Procedure: To a solution of (2-{4-[6-Methoxy-7-methyl-3-oxo-4-(2-trimethylsilanyl-ethoxy)-1,3-dihydro-isobenzofuran-5-yl]-2-methyl-but-2-enylamino}-ethyl)-phosphonic acid diethyl ester (74 mg, 0.14 mmol) in formic acid (1 mL) was added formic anhydride (1 mL) and the solution was stirred at room temperature for 1 hour. The reaction mixture was concentrated and the crude product carried onto the next step. The NMR data of this compound shows two rotamers with the ratio of 70:30. 1H NMR (300 MHz, CDCl3) δ 0.05 (s, 9H), 1.18-1.28 (m, 2H), 1.28 and 1.30 (t, 6H, J=7 Hz), 1.74 (s, 3H), 1.84-2.08 (m, 2H), 2.19 (s, 3H), 3.34-3.45 (m, 2H), 3.47 (d, 2H, J=7 Hz), 3.72 and 3.87 (s, 2H), 3.78 and 3.79 (s, 3H), 4.06 and 4.07 (pent, 4H, J=7 Hz), 4.26-4.37 (m, 2H), 5.13 (s, 2H), 5.30-5.46 (m, 1H), 8.03 and 8.19 (s, 1H) ppm; 31P (121.4 MHz, CDCl3) δ 27.5 and 28.1 ppm; MS (m/z) 570.1 [M+H]+, 592.2 [M+Na]+. The reaction mixture was concentrated

Conditions: temp:55.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To anhydrous acetic acid (0.51 ml) was added formic acid, (0.25 ml) at 0° C., and the mixture was stirred at 55° C. for 2 hours, air-cooled and diluted with THF (10 ml). In THF (15 ml) was dissolved methyl 7-[4-(2-propoxy)ethoxyphenyl]-2,3-dihydro-1H-1-benzazepine-4-carboxylate (462 mg), and the solution was added dropwise to the previously prepared solution of formic anhydride in THF, at 0° C. The mixture was stirred at room temperature for 2 hours, and the solvent was evaporated under reduced pressure. The residue was diluted with ethyl acetate, washed with saturated sodium hydrogen carbonate solution, water and saturated brine, and dried with anhydrous, magnesium sulfate. The solvent was evaporated under reduced pressure to give crystals, which were washed with ethyl acetate/hexane to give methyl 1-formyl-7-[4-(2-propoxy)ethoxyphenyl]-2,3-dihydro-1H-1-benzazepine-4-carboxylate (496 mg) as white crystals. air-cooled The mixture was stirred at room temperature for 2 hours the solvent was evaporated under reduced pressure The residue was diluted with ethyl acetate washed with saturated sodium hydrogen carbonate solution, water and saturated brine dried with anhydrous, magnesium sulfate The solvent was evaporated under reduced pressure to give crystals, which were washed with ethyl acetate/hexane

Conditions: temp:55.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To anhydrous acetic acid (0.51 ml) was added formic acid, (0.25 ml) at 0° C., and the mixture was stirred at 55° C. for 2 hours, air-cooled and diluted with THF (10 ml). In THF (15 ml) was dissolved methyl 7-[4-(2-propoxy)ethoxyphenyl]-2,3-dihydro-1H-1-benzazepine-4-carboxylate (462 mg), and the solution was added dropwise to the previously prepared solution of formic anhydride in THF, at 0° C. The mixture was stirred at room temperature for 2 hours, and the solvent was evaporated under reduced pressure. The residue was diluted with ethyl acetate, washed with saturated sodium hydrogen carbonate solution, water and saturated brine, and dried with anhydrous, magnesium sulfate. The solvent was evaporated under reduced pressure to give crystals, which were washed with ethyl acetate/hexane to give methyl 1-formyl-7-[4-(2-propoxy)ethoxyphenyl]-2,3-dihydro-1H-1-benzazepine-4-carboxylate (496 mg) as white crystals. air-cooled The mixture was stirred at room temperature for 2 hours the solvent was evaporated under reduced pressure The residue was diluted with ethyl acetate washed with saturated sodium hydrogen carbonate solution, water and saturated brine dried with anhydrous, magnesium sulfate The solvent was evaporated under reduced pressure to give crystals, which were washed with ethyl acetate/hexane

Conditions: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To anhydrous acetic acid (0.63 ml) was added formic acid (0.31 ml) at 0° C., and the mixture was stirred at 60° C. for 2 hours, cooled and diluted with THF (10 ml). In THF (10 ml) was dissolved methyl 7-(4-ethoxy-3-fluorophenyl)-2,3-dihydro-1H-1-benzazepine-4-carboxylate (510 mg), and the solution was added dropwise to the previously prepared solution of formic anhydride in THF, at 0° C. The mixture was stirred at room temperature for 2 hours, and the solvent was evaporated under reduced pressure. The residue was diluted with ethyl acetate, washed with saturated sodium hydrogen carbonate solution, water and saturated brine, and dried with anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure to give crystals, which were washed with ethyl acetate/hexane to give methyl 7-(4-ethoxy-3-fluoropheny)-1-formyl-2,3-dihydro-1H-1-benzazepine-4-carboxylate (490 mg, 89%) as white crystals. cooled The mixture was stirred at room temperature for 2 hours the solvent was evaporated under reduced pressure The residue was diluted with ethyl acetate washed with saturated sodium hydrogen carbonate solution, water and saturated brine dried with anhydrous magnesium sulfate The solvent was evaporated under reduced pressure to give crystals, which were washed with ethyl acetate/hexane

Conditions: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To anhydrous acetic acid (0.65 ml) was added formic acid (0.32 ml) at 0° C., and the mixture was stirred at 60° C. for 2 hours, air-cooled and diluted with THF (10 ml). In THF (10 ml) was dissolved methyl 7-(4 propoxyphenyl)-2,3-dihydro-1H-1-benzazepine-4-carboxylate (520 mg), and the solution was added dropwise to the previously prepared solution of formic anhydride in THF, at 0° C. The mixture was stirred at room temperature for 1.5 hours. The solvent was evaporated under reduced pressure, and the residue was diluted with ethyl acetate, washed with saturated sodium hydrogen carbonate solution, water and saturated brine, and dried with anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure to give crystals, which were washed with ethyl acetate/hexane to give methyl 1-formyl-7-(4-propoxyphenyl)-2,3-dihydro-1H-1-benzazepine-4-carboxylate (563 mg) as white crystals. air-cooled The mixture was stirred at room temperature for 1.5 hours The solvent was evaporated under reduced pressure the residue was diluted with ethyl acetate washed with saturated sodium hydrogen carbonate solution, water and saturated brine dried with anhydrous magnesium sulfate The solvent was evaporated under reduced pressure to give crystals, which were washed with ethyl acetate/hexane