methyl 4-(3-bromo-4-oxobutyl)benzoate

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To 1.69 g (13.4 mmol) of 2,4-diamino-6-hydroxypyrimidine, 2.20 g (26.8 mmol) of sodium acetate and 20 ml of water at 80° C. were added 3.82 g (13.4 mmol) of 2-bromo-4-(4-carbomethoxyphenyl)butanal, prepared in Preparation 2, in 7 ml of methanol over 5 minutes. The mixture was maintained at 80° C. for 5 minutes, cooled to room temperature and stirred for 30 minutes. The mixture was filtered, washed with water, and dried for 18 hours at 50° C. @10 torr to provide 3.32 g of 4-(2-[2-amino-4-oxo-3,7-dihydropyrrolo[2,3-d]pyrimidin-5-yl]ethyl)benzoic acid methyl ester (m.p. >220° C.) in a yield of 79.4 percent. The remaining filtrate was cooled to 5° C. and filtered to provide an additional 0.069 g of the above product, for a combined yield of 81 percent. 1H NMR (DMSO-d6) δ2.80 (m, 2H), 2.93 (m, 2H), 3.78 (s, 3H), 5.97 (s, 2H), 6.26 (d, J=2.0 Hz, 1H), 7.28 (d, J=8.2 Hz, 2H), 7.80 (d, J=8.2 Hz, 2H), 10.12 (s, 1H), 10.58 (s, 1H); FDMS 312 (M+), Anal. for C16H16N4O3, Calcd: C, 61.53; H, 5.16; N, 17.94; Found: C, 61.79; H, 5.33; N, 17.66. cooled to room temperature The mixture was filtered washed with water dried for 18 hours at 50° C.

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To 1.69 g (13.4 mmol) of 2,4-diamino-6-hydroxypyrimidine, 2.20 g (26.8 mmol) of sodium acetate and 20 ml of water at 80° C. were added 3.82 g (13.4 mmol) of 2-bromo-4-(4-carbomethoxyphenyl)butanal, prepared in Preparation 2, in 7 ml of methanol over 5 minutes. The mixture was maintained at 80° C. for 5 minutes, cooled to room temperature and stirred for 30 minutes. The mixture was filtered, washed with water, and dried for 18 hours at 50° C. @10 torr to provide 3.32 g of 4-(2-[2-amino-4-oxo-3,7-dihydropyrrolo[2,3-d]pyrimidin-5-yl]ethyl)benzoic acid methyl ester (m.p. >220° C.) in a yield of 79.4 percent. The remaining filtrate was cooled to 5° C. and filtered to provide an additional 0.069 g of the above product, for a combined yield of 81 percent. 1H NMR (DMSO-d6) δ2.80 (m, 2H), 2.93 (m, 2H), 3.78 (s, 3H), 5.97 (s, 2H), 6.26 (d, J=2.0 Hz, 1H), 7.28 (d, J=8.2 Hz, 2H), 7.80 (d, J=8.2 Hz, 2H), 10.12 (s, 1H), 10.58 (s, 1H); FDMS 312 (M+), Anal. for C16H16N4O3, Calcd: C, 61.53; H, 5.16; N, 17.94; Found: C, 61.79; H, 5.33; N, 17.66. cooled to room temperature The mixture was filtered washed with water dried for 18 hours at 50° C.

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

Procedure: To 4.46 g (16 mmol) of methyl 4-(4-trimethylsilyloxy-3-butenyl)benzoate, prepared in Preparation 1, in 16 ml carbon tetrachloride at -20° C. was slowly added 2.56 g (16 mmol) of bromine in 16 ml carbon tetrachloride over 4 hours. The mixture was allowed to come to room temperature then decanted from a small amount of insoluble material. The solvent was removed by vacuum rotary evaporation to give 4.60 g of 2-bromo-4-(4-carbomethoxyphenyl) butanal. Chromatography purification silica; hexane-ethyl acetate 7:3) of the above product gave 4.0 g in a yield of 87.8 percent. 1H NMR (CDCl3) δ2.24 (m, 1H), 2,36 (m, 1H), 2.81 (m, 1H), 2.90 (m, 1H), 3.90 (s, 3H), 4.16 (m, 1H), 7.27 (d, J=8.2 Hz, 2H), 7.97 (d, J=8.2 Hz, 2H), 9.46 (d, J=2.1 Hz, 1H); 13C NMR (CDCl3) δ32.5, 32.7, 51.7, 54.3, 128.3, 128.4, 129.8, 145.0, 166.6, 192.0. over 4 hours to come to room temperature then decanted from a small amount of insoluble material The solvent was removed by vacuum rotary evaporation

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

Procedure: To 4.46 g (16 mmol) of methyl 4-(4-trimethylsilyloxy-3-butenyl)benzoate, prepared in Preparation 1, in 16 ml carbon tetrachloride at -20° C. was slowly added 2.56 g (16 mmol) of bromine in 16 ml carbon tetrachloride over 4 hours. The mixture was allowed to come to room temperature then decanted from a small amount of insoluble material. The solvent was removed by vacuum rotary evaporation to give 4.60 g of 2-bromo-4-(4-carbomethoxyphenyl) butanal. Chromatography purification silica; hexane-ethyl acetate 7:3) of the above product gave 4.0 g in a yield of 87.8 percent. 1H NMR (CDCl3) δ2.24 (m, 1H), 2,36 (m, 1H), 2.81 (m, 1H), 2.90 (m, 1H), 3.90 (s, 3H), 4.16 (m, 1H), 7.27 (d, J=8.2 Hz, 2H), 7.97 (d, J=8.2 Hz, 2H), 9.46 (d, J=2.1 Hz, 1H); 13C NMR (CDCl3) δ32.5, 32.7, 51.7, 54.3, 128.3, 128.4, 129.8, 145.0, 166.6, 192.0. over 4 hours to come to room temperature then decanted from a small amount of insoluble material The solvent was removed by vacuum rotary evaporation

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To 1.69 g (13.4 mmol) of 2,4-diamino-6-hydroxypyrimidine, 2.20 g (26.8 mmol) of sodium acetate and 20 ml of water at 80° C. were added 3.82 g (13.4 mmol) of 2-bromo-4-(4-carbomethoxyphenyl)butanal, prepared in Preparation 2, in 7 ml of methanol over 5 minutes. The mixture was maintained at 80° C. for 5 minutes, cooled to room temperature and stirred for 30 minutes. The mixture was filtered, washed with water, and dried for 18 hours at 50° C. @10 torr to provide 3.32 g of 4-(2-[2-amino-4-oxo-3,7-dihydropyrrolo[2,3 -d]pyrimidin-5-yl]ethyl)benzoic acid methyl ester (m.p. >220° C.) in a yield of 79.4 percent. The remaining filtrate was cooled to 5° C. and filtered to provide an additional 0.069 g of the above product, for a combined yield of 81 percent. 1H NMR (DMSO-d6)δ2.80 (m, 2H), 2.93 (m, 2H), 3.78 (s, 3H), 5.97 (s, 2H), 6.26 (d, J =2.0 Hz, 1H), 7.28 (d, J=8.2 Hz, 2H), 7.80 (d, J=8.2 Hz, 2H), 10.12 (s, 1H), 10.58 (s, 1H); FDMS 312 (M+), Anal. for C16H16N4O3, Calcd: C, 61.53; H, 5.16; N, 17.94; Found: C, 61.79; H, 5.33; N, 17.66. cooled to room temperature The mixture was filtered washed with water dried for 18 hours at 50° C.

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To 1.69 g (13.4 mmol) of 2,4-diamino-6-hydroxypyrimidine, 2.20 g (26.8 mmol) of sodium acetate and 20 ml of water at 80° C. were added 3.82 g (13.4 mmol) of 2-bromo-4-(4-carbomethoxyphenyl)butanal, prepared in Preparation 2, in 7 ml of methanol over 5 minutes. The mixture was maintained at 80° C. for 5 minutes, cooled to room temperature and stirred for 30 minutes. The mixture was filtered, washed with water, and dried for 18 hours at 50° C. @ torr to provide 3.32 g of 4-(2-[2-amino-4-oxo-3,7-dihydropyrrolo[2,3-d]pyrimidin-5-yl]ethyl)benzoic acid methyl ester (m.p. >220° C.) in a yield of 79.4 percent. The remaining filtrate was cooled to 5° C. and filtered to provide an additional 0.069 g of the above product, for a combined yield of 81 percent. 1H NMR (DMSO-d6) δ 2.80 (m, 2H), 2.93 (m, 2H), 3.78 (s, 3H), 5.97 (s, 2H), 6.26 (d, J=2.0 Hz, 1H), 7.28 (d, J=8.2 Hz, 2H), 7.80 (d, J=8.2 Hz, 2H), 10.12 (s, 1H), 10.58 (s, 1H); FDMS 312 (M+), Anal. for C16H16N4O3, Calcd: C, 61.53; H, 5.16; N, 17.94; Found: C, 61.79; H, 5.33; N, 17.66. cooled to room temperature The mixture was filtered washed with water dried for 18 hours at 50° C. @ torr

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

Procedure: To 4.46 g (16 mmol) of methyl 4-(4-trimethylsilyloxy-3-butenyl)benzoate, prepared in Preparation 1, in 16 ml carbon tetrachloride at -20° C. was slowly added 2.56 g (16 mmol) of bromine in 16 ml carbon tetrachloride over 4 hours. The mixture was allowed to come to room temperature then decanted from a small amount of insoluble material. The solvent was removed by vacuum rotary evaporation to give 4.60 g of 2-bromo-4-(4-carbomethoxyphenyl)butanal. Chromatography purification (silica; hexane - ethyl acetate 7:3) of the above product gave 4.0 g in a yield of 87.8 percent. 1H NMR (CDCl3) δ 2.24 (m, 1H), 2,36 (m, 1H), 2.81 (m, 1H), 2.90 (m, 1H), 3.90 (s, 3H), 4.16 (m, 1H), 7.27 (d, J=8.2 Hz, 2H), 7.97 (d, J=8.2 Hz, 2H) , 9.46 (d, J=2.1 Hz, 1H) ; 13C NMR (CDCl3) δ 32.5, 32.7, 51.7, 54.3, 128.3, 128.4, 129.8, 145.0, 166.6, 192.0. over 4 hours to come to room temperature then decanted from a small amount of insoluble material The solvent was removed by vacuum rotary evaporation

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

Procedure: To 4.46 g (16 mmol) of methyl 4-(4-trimethylsilyloxy-3-butenyl)benzoate, prepared in Preparation 1, in 16 ml carbon tetrachloride at -20° C. was slowly added 2.56 g (16 mmol) of bromine in 16 ml carbon tetrachloride over 4 hours. The mixture was allowed to come to room temperature then decanted from a small amount of insoluble material. The solvent was removed by vacuum rotary evaporation to give 4.60 g of 2-bromo-4-(4-carbomethoxyphenyl)butanal. Chromatography purification (silica; hexane - ethyl acetate 7:3) of the above product gave 4.0 g in a yield of 87.8 percent. 1H NMR (CDCl3) δ 2.24 (m, 1H), 2,36 (m, 1H), 2.81 (m, 1H), 2.90 (m, 1H), 3.90 (s, 3H), 4.16 (m, 1H), 7.27 (d, J=8.2 Hz, 2H), 7.97 (d, J=8.2 Hz, 2H) , 9.46 (d, J=2.1 Hz, 1H) ; 13C NMR (CDCl3) δ 32.5, 32.7, 51.7, 54.3, 128.3, 128.4, 129.8, 145.0, 166.6, 192.0. over 4 hours to come to room temperature then decanted from a small amount of insoluble material The solvent was removed by vacuum rotary evaporation

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To 1.69 g (13.4 mmol) of 2,4-diamino-6-hydroxypyrimidine, 2.20 g (26.8 mmol) of sodium acetate and 20 ml of water at 80° C. were added 3.82 g (13.4 mmol) of 2-bromo-4-(4-carbomethoxyphenyl)butanal, prepared in Preparation 2, in 7 ml of methanol over 5 minutes. The mixture was maintained at 80° C. for 5 minutes, cooled to room temperature and stirred for 30 minutes. The mixture was filtered, washed with water, and dried for 18 hours at 50° C. @10 torr to provide 3.32 g of 4-(2-[2-amino-4-oxo-3,7-dihydropyrrolo[2,3-d]pyrimidin-5-yl]ethyl)benzoic acid methyl ester (m.p. >220° C.) in a yield of 79.4 percent. The remaining filtrate was cooled to 5° C. and filtered to provide an additional 0.069 g of the above product, for a combined yield of 81 percent. 1H NMR (DMSO-d6) δ2.80 (m, 2H), 2.93 (m, 2H), 3.78 (s, 3H), 5.97 (s, 2H), 6.26 (d, J=2.0 Hz, 1H), 7.28 (d, J=8.2 Hz, 2H), 7.80 (d, J=8.2 Hz, 2H), 10.12 (s, 1H), 10.58 (s, 1H); FDMS 312 (M+), Anal. for C16H16N4O3, Calcd: C, 61.53; H, 5.16; N, 17.94; Found: C, 61.79; H, 5.33; N, 17.66. cooled to room temperature The mixture was filtered washed with water dried for 18 hours at 50° C.

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

Procedure: To 4.46 g (16 mmol) of methyl 4-(4-trimethylsilyloxy-3-butenyl)benzoate, prepared in Preparation 1, in 16 ml carbon tetrachloride at -20° C. was slowly added 2.56 g (16 mmol) of bromine in 16 ml carbon tetrachloride over 4 hours. The mixture was allowed to come to room temperature then decanted from a small amount of insoluble material. The solvent was removed by vacuum rotary evaporation to give 4.60 g of 2-bromo-4-(4-carbomethoxyphenyl) butanal. Chromatography purification silica; hexane-ethyl acetate 7:3) of the above product gave 4.0 g in a yield of 87.8 percent. 1H NMR (CDCl3) δ2.24 (m, 1H), 2,36 (m, 1H), 2.81 (m, 1H), 2.90 (m, 1H), 3.90 (s, 3H), 4.16 (m, 1H), 7.27 (d, J=8.2 Hz, 2H), 7.97 (d, J=8.2 Hz, 2H), 9.46 (d, J=2.1 Hz, 1H); 13C NMR (CDCl3) δ32.5, 32.7, 51.7, 54.3, 128.3, 128.4, 129.8, 145.0, 166.6, 192.0. over 4 hours to come to room temperature then decanted from a small amount of insoluble material The solvent was removed by vacuum rotary evaporation

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To 1.69 g (13.4 mmol) of 2,4-diamino-6-hydroxypyrimidine, 2.20 g (26.8 mmol) of sodium acetate and 20 ml of water at 80° C. were added 3.82 g (13.4 mmol) of 2-bromo-4-(4-carbomethoxyphenyl)butanal, prepared in Preparation 2, in 7 ml of methanol over 5 minutes. The mixture was maintained at 80° C. for 5 minutes, cooled to room temperature and stirred for 30 minutes. The mixture was filtered, washed with water, and dried for 18 hours at 50° C. @ 10 torr to provide 3.32 g of 4-(2-[2-amino-4-oxo-3,7-dihydropyrrolo[2,3-d]pyrimidin-5-yl]ethyl)benzoic acid methyl ester (m.p. >220° C.) in a yield of 79.4 percent. The remaining filtrate was cooled to 5° C. and filtered to provide an additional 0.069 g of the above product, for a combined yield of 81 percent. 1H NMR (DMSO-d6) δ2.80 (m, 2H), 2.93 (m, 2H), 3.78 (s, 3H), 5.97 (s, 2H), 6.26 (d, J=2.0 Hz, 1H), 7.28 (d, J=8.2 Hz, 2H), 7.80 (d, J=8.2 Hz, 2H), 10.12 (s, 1H), 10.58 (s, 1H); FDMS 312 (M+), Anal. for C16H16N4O3, Calcd: C, 61.53; H, 5.16; N, 17.94; Found: C, 61.79; H, 5.33; N, 17.66. cooled to room temperature The mixture was filtered washed with water dried for 18 hours at 50° C.

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

Procedure: To 4.46 g (16 mmol) of methyl 4-(4-trimethylsilyloxy-3 -butenyl)benzoate, prepared in Preparation 1, in 16 ml carbon tetrachloride at -20° C. was slowly added 2.56 g (16 mmol) of bromine in 16 ml carbon tetrachloride over 4 hours. The mixture was allowed to come to room temperature then decanted from a small amount of insoluble material. The solvent was removed by vacuum rotary evaporation to give 4.60 g of 2-bromo-4-(4-carbomethoxyphenyl)butanal. Chromatography purification (silica; hexane-ethyl acetate 7:3) of the above product gave 4.0 g in a yield of 87.8 percent. 1H NMR (CDCl3) δ2.24 (m, 1H), 2,36 (m, 1H), 2.81 (m, 1H), 2.90 (m, 1H), 3.90 (s, 3H), 4.16 (m, 1H), 7.27 (d, J=8.2 Hz, 2H), 7.97 (d, J=8.2 Hz, 2H), 9.46 (d, J=2.1 Hz, 1H); 13C NMR (CDCl3) δ32.5, 32.7, 51.7, 54.3, 128.3, 128.4, 129.8, 145.0, 166.6, 192.0. over 4 hours to come to room temperature then decanted from a small amount of insoluble material The solvent was removed by vacuum rotary evaporation