3-Methoxyaniline → 5-Chloro-N(4)-(3-methoxybenzyl)-N(2)-(3-methoxyphenyl)pyrimidine-2,4-diamine

HRID 1614943Notes

Reaction equation

Cl[C:2]1[N:7]=[C:6]([NH:8][CH2:9][C:10]2[CH:15]=[CH:14][CH:13]=[C:12]([O:16][CH3:17])[CH:11]=2)[C:5]([Cl:18])=[CH:4][N:3]=1.[CH3:19][O:20][C:21]1[CH:22]=[C:23]([NH2:27])[CH:24]=[CH:25][CH:26]=1.O.C1(C)C=CC(S(O)(=O)=O)=CC=1.C([O-])(O)=O.[Na+]>O1CCOCC1>[Cl:18][C:5]1[C:6]([NH:8][CH2:9][C:10]2[CH:15]=[CH:14][CH:13]=[C:12]([O:16][CH3:17])[CH:11]=2)=[N:7][C:2]([NH:27][C:23]2[CH:24]=[CH:25][CH:26]=[C:21]([O:20][CH3:19])[CH:22]=2)=[N:3][CH:4]=1

Participants

Conditions

Temperature: 105 °C

Procedure

Into a reaction flask were added 2,5-dichloro-N-(3-methoxybenzyl)pyrimidin-4-amine (0.20 g, 0.70 mmol) (prepared according to Example 1, step A), 1,4-dioxane (20 mL), 3-methoxy-benzenamine (0.13 g, 1.0 mmol), and p-toluenesulfonic acid monohydrate (49 mg, 0.26 mmol). The mixture was heated at 105° C. for 2 days. To the mixture was added an aqueous solution of NaHCO3 (saturated, 0.5 mL) and the organic solvent was removed under vacuum. The aqueous layer was extracted with DCM twice. The combined organic layers were dried, filtered and concentrated. The crude product was purified by silica gel column chromatography to provide the desired product (90 mg, 30%). LCMS for C19H20ClN4O2 (M+H)+: m/z=371.1.

Workup

customthe organic solvent was removed under vacuum
extractionThe aqueous layer was extracted with DCM twice
customThe combined organic layers were dried
filtrationfiltered
concentrationconcentrated
customThe crude product was purified by silica gel column chromatography

Sources & evidence

ORD record: ord-bd2162e497d84a3eb89d349a026be4a5
Source dataset: uspto-grants-2014_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08765727B2

Reaction notes

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