2-amino-4,5-difluorophenol

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: A crude of 2-amino-4,5-diflourophenol (2.67 g, 18.4 mmol), 2-chloroacetyl chloride (2.28 g, 20 mmol) and K2CO3 (5.34 g, 38.6 mmol) were mixed according to GP1. Purified by column chromatography (SiO2; heptanes/EtOAc 4:1 to 1:1) to give the title compound (2.17 g, 64%). Rf=0.43 (heptanes/EtOAc 1:1); Mp=214.5-219.2° C.; 1H NMR (CD3OD) d 6.90 (dd, J=11.4 Hz, J=7.2 Hz, 1H), 6.80 (dd, J=11.0 Hz, J=7.7 Hz, 1H), 4.56 (s, 2H); 13C NMR (CD3OD) d 167.0, 147.0 (dd, J=243.5 Hz, J=13.8 Hz), 146.9 (dd, J=240.0 Hz, J=13.8 Hz), 141.2 (dd, J=9.8 Hz, J=3.0 Hz), 124.8 (dd, J=8.7 Hz, J=3.0 Hz), 106.9 (dd, J=22.0 Hz, J=6.9 Hz), 105.5 (dd, J=23.1 Hz, J=4.6 Hz), 68.1 (t, J=6.5 Hz). Purified by column chromatography (SiO2; heptanes/EtOAc 4:1 to 1:1)

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

Procedure: The product is prepared according to the procedure described in stage 1 of Example 2, but using 500 mg of sodium [4-(morpholin-4-yl)-6-oxo-1,6-dihydropyrimidin-2-yl]acetate (Example 1, stage 2), 425 mg of 2-amino-4,5-difluorophenol and 600 mg of N-[3-(dimethylamino)propyl]-N′-ethylcarbodiimide hydrochloride in a mixture of 4 ml of pyridine and 4 ml of dimethylformamide. 500 g of N-(4,5-difluoro-2-hydroxyphenyl)-2-[4-(morpholin-4-yl)-6-oxo-1,6-dihydropyrimidin-2-yl]acetamide are obtained in the form of a brown solid, the characteristics of which are the following: The product is prepared

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

Procedure: A crude of 2-amino-4,5-difluorophenol (2.67 g, 18.4 mmol), 2-chloroacetyl chloride (2.28 g, 20 mmol) and K2CO3 (5.34 g, 38.6 mmol) were mixed according to GP1. Purified by column chromatography (SiO2; heptanes/EtOAc 4:1 to 1:1) to give the title compound (2.17 g, 64%). Rf=0.43 (heptanes/EtOAc 1:1); Mp=214.5-219.2° C.; 1H NMR (CD3OD) δ 6.90 (dd, J=11.4 Hz, J=7.2 Hz, 1H), 6.80 (dd, J=11.0 Hz, J=7.7 Hz, 1H), 4.56 (s, 2H); 13C NMR (CD3OD) δ 167.0, 147.0 (dd, J=243.5 Hz, J=13.8 Hz), 146.9 (dd, J=240.0 Hz, J=13.8 Hz), 141.2 (dd, J=9.8 Hz, J=3.0 Hz), 124.8 (dd, J=8.7 Hz, J=3.0 Hz), 106.9 (dd, J=22.0 Hz, J=6.9 Hz), 105.5 (dd, J=23.1 Hz, J=4.6 Hz), 68.1 (t, J=6.5 Hz). Purified by column chromatography (SiO2; heptanes/EtOAc 4:1 to 1:1)

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