2-(ethoxymethyl)oxirane

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

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

Procedure: A solution of the disodium salt of N-phosphonomethylglycine is prepared as in Example 1. To 27.5 grams (0.0437 mole) of the solution is added 5.1 grams (0.05 mole) of ethyl glycidyl ether. The solution is diluted with 30 ml. water and 1 drop of Aliquat 336 phase-transfer catalyst solution is added. It is then rotated on a polymer wheel for 5 days, treated with 1.0 gram of ethyl glycidyl ether, rotated for 10 days, then warmed with charcoal and filtered to remove resinous material. The solution is then rotoevaporated to dryness, and the solid is redried over potassium hydroxide pellets at 100° C. and <1 mm. Hg. The product, obtained as a tan, brittle foamed glass, is the disodium salt of N-(3-ethoxy-2-hydroxy-1-propyl)-N-phosphonomethylglycine. Elemental analysis shows 31.15% carbon, 5.62% hydrogen and 8.87% phosphorus as against calculated values of 30.49%, 5.12% and 9.83% for C8H16NNa2O7P. The solution is diluted with 30 ml rotated for 10 days filtered to remove resinous material the solid is redried over potassium hydroxide pellets at 100° C. The product, obtained as a tan, brittle

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

Conditions: temp:85.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 7,8-bis(4-chlorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-3(2H)-one, (300 mg, 0.84 mmol), prepared as described in Example 1, in 8 mL of DMF was added ethyl glycidyl ether (86 mg, 0.84 mmol), followed by K2CO3 (232 mg, 1.68 mmol). The mixture was heated at 85° C. After stirring overnight, the reaction was allowed to cool to RT The reaction mixture was diluted with EtOAc (200 mL). The resultant solution was washed with saturated aqueous NaCl (3×40 mL). The organic layer was dried over MgSO4, filtered, and concentrated under reduced pressure. The crude product was purified using silica gel column chromatography using an automated system, eluting with a gradient of 0% to 60% EtOAc/hexanes for 30 min followed by 100% EtOAc for 40 min. The title compound, 7,8-bis(4-chlorophenyl)-2-(3-ethoxy-2-hydroxypropyl)-[1,2,4]triazolo[4,3-b]pyridazin-3(2H)-one, (0.3 gm, 78% yield) as a yellow solid. MS [M+H]+: found 459; 1H NMR (CDCl3, 400 MHz) δ 8.20 (s, 1H), 7.34-7.25 (m, 6H), 7.09 (d, 2H), 4.29-4.24 (m, 2H), 4.18-4.13 (m, 1H), 3.57-3.49 (m, 4H), 1.17 (t, 3H). to cool to RT The reaction mixture The resultant solution was washed with saturated aqueous NaCl (3×40 mL) The organic layer was dried over MgSO4 filtered concentrated under reduced pressure The crude product was purified eluting with a gradient of 0% to 60% EtOAc/hexanes for 30 min followed by 100% EtOAc for 40 min

Conditions: temp:85.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 7,8-bis(4-chlorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-3(2H)-one, (300 mg, 0.84 mmol), prepared as described in Example 1, in 8 mL of DMF was added ethyl glycidyl ether (86 mg, 0.84 mmol), followed by K2CO3 (232 mg, 1.68 mmol). The mixture was heated at 85° C. After stirring overnight, the reaction was allowed to cool to RT The reaction mixture was diluted with EtOAc (200 mL). The resultant solution was washed with saturated aqueous NaCl (3×40 mL). The organic layer was dried over MgSO4, filtered, and concentrated under reduced pressure. The crude product was purified using silica gel column chromatography using an automated system, eluting with a gradient of 0% to 60% EtOAc/hexanes for 30 min followed by 100% EtOAc for 40 min. The title compound, 7,8-bis(4-chlorophenyl)-2-(3-ethoxy-2-hydroxypropyl)-[1,2,4]triazolo[4,3-b]pyridazin-3(2H)-one, (0.3 gm, 78% yield) as a yellow solid. MS [M+H]+: found 459; 1H NMR (CDCl3, 400 MHz) δ 8.20 (s, 1H), 7.34-7.25 (m, 6H), 7.09 (d, 2H), 4.29-4.24 (m, 2H), 4.18-4.13 (m, 1H), 3.57-3.49 (m, 4H), 1.17 (t, 3H). to cool to RT The reaction mixture The resultant solution was washed with saturated aqueous NaCl (3×40 mL) The organic layer was dried over MgSO4 filtered concentrated under reduced pressure The crude product was purified eluting with a gradient of 0% to 60% EtOAc/hexanes for 30 min followed by 100% EtOAc for 40 min

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

Procedure: A solution of the disodium salt of N-phosphonomethylglycine is prepared as in Example 1. To 27.5 grams (0.0437 mole) of the solution is added 5.1 grams (0.05 mole) of ethyl glycidyl ether. The solution is diluted with 30 ml. of water and 1 drop of Aliquat 336 phase-transfer catalyst solution is added. It is then rotated on a polymer wheel for 5 days, treated with 1.0 gram of ethyl glycidyl ether, rotated for 10 days, then warmed with charcoal and filtered to remove resinous material. The solution is then rotoevaporated to dryness, and the solid is redried over potassium hydroxide pellets at 100° C. and<1 mm. Hg. The product, obtained as a tan, brittle foamed glass, is the disodium salt of N-(3-ethoxy-2-hydroxy-1-propyl)-N-phosphonomethylglycine. Elemental analysis shows 31.15% carbon, 5.62% hydrogen and 8.87% phosphorus as against calculated values of 30.49%, 5.12% and 9.83% for C8H16NNa2O7P. The solution is diluted with 30 ml rotated for 10 days filtered to remove resinous material the solid is redried over potassium hydroxide pellets at 100° C. The product, obtained as a tan, brittle

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

Procedure: A solution of the disodium salt of N-phosphonomethylglycine is prepared as in Example 1. To 27.5 grams (0.0437 mole) of the solution is added 5.1 grams (0.05 mole) of ethyl glycidyl ether. The solution is diluted with 30 ml. water and 1 drop of Aliquat 336 phase-transfer catalyst solution is added. It is then rotated on a polymer wheel for 5 days, treated with 1.0 gram of ethyl glycidyl ether, rotated for 10 days, then warmed with charcoal and filtered to remove resinous material. The solution is then rotoevaporated to dryness, and the solid is redried over potassium hydroxide pellets at 100° C. and <1 mm. Hg. The product, obtained as a tan, brittle foamed glass, is the disodium salt of N-(3-ethoxy-2-hydroxy-1-propyl)-N-phosphonomethylglycine. Elemental analysis shows 31.15% carbon, 5.62% hydrogen and 8.87% phosphorus as against calculated values of 30.49%, 5.12% and 9.83% for C8H16NNa2O7P. The solution is diluted with 30 ml rotated for 10 days filtered to remove resinous material the solid is redried over potassium hydroxide pellets at 100° C. The product, obtained as a tan, brittle

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

Procedure: A solution of the disodium salt of N-phosphonomethylglycine is prepared as in Example 1. To 27.5 grams (0.0437 mole) of the solution is added 5.1 grams (0.05 mole) of ethyl glycidyl ether. The solution is diluted with 30 ml. water and 1 drop of Aliquat 336 phase-transfer catalyst solution is added. It is then rotated on a polymer wheel for 5 days, treated with 1.0 gram of ethyl glycidyl ether, rotated for 10 days, then warmed with charcoal and filtered to remove resinous material. The solution is then rotoevaporated to dryness, and the solid is redried over potassium hydroxide pellets at 100° C. and <1 mm. Hg. The product, obtained as a tan, brittle foamed glass, is the disodium salt of N-(3-ethoxy-2-hydroxy-1-propyl)-N-phosphonomethylglycine. Elemental analysis shows 31.15% carbon, 5.62% hydrogen and 8.87% phosphorus as against calculated values of 30.49%, 5.12% and 9.83% for C8H16NNa2O7P. The solution is diluted with 30 ml rotated for 10 days filtered to remove resinous material the solid is redried over potassium hydroxide pellets at 100° C. The product, obtained as a tan, brittle