2,4-dichloro-3-isocyanato-1,5-dimethoxybenzene

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

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

Conditions: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 2,6-dichloro-3,5-dimethoxy-aniline (133 mg, 0.60 mmol; Preparation 2) in 2 ml of dioxane under a nitrogen atmosphere, phosgene (0.54 ml 20% in toluene, 1.0 mmol) is added. The mixture is stirred for 60 min at 100° C., cooled to RT and concentrated in vacuo, yielding 2,6-dichloro-3,5-dimethoxyphenylisocyanate. cooled to RT concentrated in vacuo

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

Procedure: To a solution of 2,6-dichloro-3,5-dimethoxy-aniline (124 mg, 0.56 mmol; Preparation 2) in 2 ml of dioxane under a nitrogene atmosphere, phosgene (0.52 ml 20% in toluene, 0.98 mmol) is added. The mixture is stirred for 70 min at 100° C., cooled to RT and concentrated in vacuo, yielding 2,6-dichloro-3,5-dimethoxyphenylisocyanate. The resulting solid is added portion-wise to a boiling solution of N-methyl-N′-[4-(4-methyl-piperazin-1-yl)-phenyl]-[1,3,5]triazine-2,4-diamine (140 mg, 0.47 mmol) in 8 ml of toluene during 20 min. After 3 h, another 2 eq of 2,6-dichloro-3,5-dimethoxyphenylisocyanate are added and stirring is continued for totally 5 h. Then the reaction mixture is diluted with DCM and a saturated aqueous solution of NaHCO3. The aqueous layer is separated and extracted twice with DCM. The organic phases are washed with water and brine, dried (Na2SO4) and concentrated. Column chromatography (SiO2; DCM/MeOH/NH3aq, 97:3:0.2) gives the title compound: ESI-MS: 547/549 [MH]+; tR=3.5 min (purity: 100%, gradient J); TLC: Rf=0.40 (DCM/MeOH+1% NH3aq, 95:5). is continued for totally 5 h The aqueous layer is separated extracted twice with DCM The organic phases are washed with water and brine dried (Na2SO4) concentrated

Conditions: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 2,6-dichloro-3,5-dimethoxy-aniline (124 mg, 0.56 mmol; Preparation 2) in 2 ml of dioxane under a nitrogene atmosphere, phosgene (0.52 ml 20% in toluene, 0.98 mmol) is added. The mixture is stirred for 70 min at 100° C., cooled to RT and concentrated in vacuo, yielding 2,6-dichloro-3,5-dimethoxyphenylisocyanate. The resulting solid is added portion-wise to a boiling solution of N-methyl-N′-[4-(4-methyl-piperazin-1-yl)-phenyl]-[1,3,5]triazine-2,4-diamine (140 mg, 0.47 mmol) in 8 ml of toluene during 20 min. After 3 h, another 2 eq of 2,6-dichloro-3,5-dimethoxyphenylisocyanate are added and stirring is continued for totally 5 h. Then the reaction mixture is diluted with DCM and a saturated aqueous solution of NaHCO3. The aqueous layer is separated and extracted twice with DCM. The organic phases are washed with water and brine, dried (Na2SO4) and concentrated. Column chromatography (SiO2; DCM/MeOH/NH3aq, 97:3:0.2) gives the title compound: ESI-MS: 547/549 [MH]+; tR=3.5 min (purity: 100%, gradient J); TLC: Rf=0.40 (DCM/MeOH+1% NH3aq, 95:5). cooled to RT concentrated in vacuo

Conditions: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 2,6-dichloro-3,5-dimethoxyphenylisocyanate (1.2 eq.) is added to a solution of N-[4-(4-ethyl-piperazin-1-yl)-phenyl]-pyrimidine-4,6-diamine (350 mg, 1.18 mmol) in NMP (2 ml), at 70° C. and under an argon atmosphere. The resulting mixture is stirred at 70° C. for 2 h, allowed to cool to RT and concentrated. The residue is diluted with DCM and a saturated aqueous solution of sodium bicarbonate. The aqueous layer is separated and extracted with DCM. The organic phase is washed with brine, dried (sodium sulfate), filtered and concentrated. Purification of the crude product by trituration in MeOH followed by silica gel column chromatography (DCM/MeOH+1% NH3aq, 97:3) affords the title compound as a white solid: to cool to RT concentrated The residue is diluted with DCM The aqueous layer is separated extracted with DCM The organic phase is washed with brine dried (sodium sulfate) filtered concentrated Purification of the crude product by trituration in MeOH

Conditions: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 2,6-dichloro-3,5-dimethoxyphenylisocyanate (1.2 eq.) is added to a solution of N-[4-(4-ethyl-piperazin-1-yl)-phenyl]-pyrimidine-4,6-diamine (350 mg, 1.18 mmol) in NMP (2 ml), at 70° C. and under an argon atmosphere. The resulting mixture is stirred at 70° C. for 2 h, allowed to cool to RT and concentrated. The residue is diluted with DCM and a saturated aqueous solution of sodium bicarbonate. The aqueous layer is separated and extracted with DCM. The organic phase is washed with brine, dried (sodium sulfate), filtered and concentrated. Purification of the crude product by trituration in MeOH followed by silica gel column chromatography (DCM/MeOH+1% NH3aq, 97:3) affords the title compound as a white solid: to cool to RT concentrated The residue is diluted with DCM The aqueous layer is separated extracted with DCM The organic phase is washed with brine dried (sodium sulfate) filtered concentrated Purification of the crude product by trituration in MeOH

Conditions: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 2,6-dichloro-3,5-dimethoxyphenylisocyanate (1.25 eq.) is added to a solution of N-(3-dimethylaminomethyl-phenyl)-N′-methyl-pyrimidine-4,6-diamine (93 mg, 0.36 mmol, 1 eq.) in toluene (3 ml), at 70° C. and under an argon atmosphere. The resulting mixture is stirred at 70° C. for 18 h, allowed to cool to RT, and diluted with DCM and a saturated aqueous solution of sodium bicarbonate. The aqueous layer is separated and extracted with DCM. The organic phase is washed with brine, dried (sodium sulfate), filtered and concentrated. Purification of the crude product by silica gel column chromatography (DCM/MeOH+1% NH3aq, 9:1) affords 121 mg of the title compound as a white solid: ESI-MS: 504.9/506.9 [MH]+; tR=3.64 min (purity: 100%, gradient J); TLC: Rf=0.12 (DCM/MeOH+1% NH3aq, 9:1). to cool to RT The aqueous layer is separated extracted with DCM The organic phase is washed with brine dried (sodium sulfate) filtered concentrated Purification of the crude product by silica gel column chromatography (DCM/MeOH+1% NH3aq, 9:1)

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

Procedure: To a solution of 6-chloro-N-methylpyrimidin-4-amine (Procedure 2A, step e; 460 g, 3.21 mmol) in DMF (15 mL) was added NaH (60%, 193 g, 4.81 mmol) at 0° C., and the mixture was stirred for 30 minutes at room temperature. A solution of 2,4-dichloro-3-isocyanato-1,5-dimethoxy-benzene (Procedure H, steps a-d; 1.03 g, 4.17 mmol) in DMF (5 mL) was added dropwise at room temperature. The resulting mixture was stirred for 0.5 hour. SEMCl (804 g, 4.81 mmol) in DMF (2 mL) was added. The reaction mixture was stirred at room temperature for 1 hour. Saturated aqueous NH4Cl was added to quench the reaction. The mixture was diluted with water and extracted with EtOAc. The combined extracts were washed with water and brine, dried over anhydrous Na2SO4 and filtered. The filtrate was evaporated under vacuum to give crude product, which was purified by flash chromatography on silica to obtain the title compound (470 mg, yield: 28%). MS (ESI): 521 [M+H]+. The resulting mixture was stirred for 0.5 hour The reaction mixture was stirred at room temperature for 1 hour to quench the reaction extracted with EtOAc The combined extracts were washed with water and brine dried over anhydrous Na2SO4 filtered The filtrate was evaporated under vacuum to give crude product, which was purified by flash chromatography on silica

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

Procedure: To a solution of N4-(4-(4-ethylpiperazin-1-yl)-2-nitrophenyl)-N6-methylpyrimidine-4,6-diamine (870 g, 2.44 mmol) in THF (15 mL) was added NaH (60%, 200 mg, 5 mmol) at 0° C., and the mixture was stirred for 30 minutes at room temperature. A solution of 2,4-dichloro-3-isocyanato-1,5-dimethoxy-benzene (Procedure 2A, steps a-d; 908 g, 3.66 mmol) in THE was added dropwise at 0° C. The resulting mixture was stirred at room temperature for 2 hours. Saturated aqueous NH4Cl solution (2 mL) was added to quench the reaction. The mixture was concentrated and extracted with DCM. The combined extracts were washed with brine, dried over anhydrous Na2SO4, and concentrated to give the crude product, which was purified by flash chromatography on silica to obtain the title compound (330 mg, yield: 21%) as a red oil. 1H NMR (400 MHz, CDCl3) δ 1.44 (t, 3H), 3.01 (t, 2H), 3.21 (q, 2H), 3.41-3.49 (m, 5H), 3.73-3.80 (m, 4H), 3.92 (s, 6H), 6.27 (s, 1H), 6.55 (s, 1H), 7.25 (d, 1H), 7.69 (s, 1H), 8.32 (d, 1H), 8.52 (s, 1H), 10.28 (br s, 1H), 12.05 (br s, 1H); MS (ESI): 605 [M+H]+. The resulting mixture was stirred at room temperature for 2 hours to quench the reaction The mixture was concentrated extracted with DCM The combined extracts were washed with brine dried over anhydrous Na2SO4 concentrated to give the crude product, which was purified by flash chromatography on silica

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

Procedure: To a solution of N-(2-nitro-phenyl)-N′-pyridin-3-ylmethyl-pyrimidine-4,6-diamine (150 g, 0.467 mmol) in THF (15 mL) was added NaH (60%, 48 g, 1.2 mmol) at 0° C., and the mixture was stirred for 30 minutes at room temperature. A solution of 2,4-dichloro-3-isocyanato-1,5-dimethoxy-benzene (procedure 2A, steps a-d; 180 g, 0.73 mmol) was added dropwise at room temperature. The resulting mixture was stirred for 2 hours. Water (2 mL) was added to quench the reaction. The mixture was concentrated, and the residue was purified by flash chromatography on silica to obtain the title compound (85 mg, yield: 32%). MS (ESI): 570 [M+H]+. The resulting mixture was stirred for 2 hours to quench the reaction The mixture was concentrated the residue was purified by flash chromatography on silica

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

Procedure: To a solution of N-methyl-N′-(2-nitro-phenyl)-pyrimidine-4,6-diamine (150 g, 0.61 mmol) in THF (15 mL) was added NaH (60%, 60 g, 1.5 mmol) at 0° C., and the mixture was stirred for 30 minutes at room temperature. A solution of 2,4-dichloro-3-isocyanato-1,5-dimethoxy-benzene (180 g, 0.73 mmol) was added dropwise at room temperature. The resulting mixture was stirred for 2 hours. Water (2 mL) was added to quench the reaction. The mixture was concentrated, and the residue was purified by flash chromatography on silica eluting with DCM:EtOAc=6:1-1:1 to obtain the title compound (54 mg, yield: 18%) as a yellow solid. 1H NMR (400 MHz, DMSO-d6) δ 3.38 (s, 3H), 3.93 (s, 6H), 6.75 (s, 1H), 6.91 (s, 1H), 7.34 (t, 1H), 7.72 (t, 1H), 7.79 (d, 1H), 8.01 (d, 1H), 8.38 (s, 1H), 9.99 (s, 1H), 11.78 (s, 1H); MS (ESI): 493 [M+H]+. The resulting mixture was stirred for 2 hours to quench the reaction The mixture was concentrated the residue was purified by flash chromatography on silica eluting with DCM