Dimethylamine → 5-iodo-N4-(6-methoxypyridin-3-yl)-N2,N2-dimethylpyrimidine-2,4-diamine

HRID 1811936Notes

Reaction equation

Cl[C:2]1[N:7]=[C:6]([NH:8][C:9]2[CH:10]=[N:11][C:12]([O:15][CH3:16])=[CH:13][CH:14]=2)[C:5]([I:17])=[CH:4][N:3]=1.[CH3:18][NH:19][CH3:20]>C(O)C>[I:17][C:5]1[C:6]([NH:8][C:9]2[CH:10]=[N:11][C:12]([O:15][CH3:16])=[CH:13][CH:14]=2)=[N:7][C:2]([N:19]([CH3:20])[CH3:18])=[N:3][CH:4]=1

Participants

Conditions

Temperature: 140 °C

Procedure

A glass microwave reaction vessel was charged with 2-chloro-5-iodo-N-(6-methoxypyridin-3-yl)pyrimidin-4-amine (150 mg, 0.414 mmol), dimethylamine (2.0 M solution in tetrahydrofuran) (0.044 mL, 0.827 mmol) and ethanol (2 mL). The reaction mixture was stirred and heated in a Emrys Optimizer microwave reactor (Personal Chemistry, Biotage AB, Inc., Upssala, Sweden) at 140° C. for 20 min. The solvent was removed in vacuo and the residue was purified by silica gel chromatography eluting with 50% EtOAc/hexanes to give 5-iodo-N4-(6-methoxypyridin-3-yl)-N2,N2-dimethylpyrimidine-2,4-diamine (123 mg, 0.331 mmol, 80% yield). 1H NMR (300 MHz, CDCl3) δ 8.30 (s, 1H); 8.18 (s, 1H); 7.84 (dd, J=8.92, 2.48 Hz, 1H); 6.75 (d, J=8.92 Hz, 1H); 6.65 (s, 1H); 3.94 (s, 3H); 3.09 (s, 6H). m/z (ESI, +ve ion) 371.9 (M+H)+.

Workup

customA glass microwave reaction vessel
customThe solvent was removed in vacuo
customthe residue was purified by silica gel chromatography
washeluting with 50% EtOAc/hexanes

Sources & evidence

ORD record: ord-f89f3c8bfad5401fa0ef06b07d08fd94
Source dataset: uspto-grants-2013_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08362241B2

Reaction notes

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