Potassium Carbonate → 5-[5-Iodo-2-isopropyl-4-(2-trimethylsilanyloxy-ethoxy)-phenoxy]-pyrimidine-2,4-diamine

HRID 1677317Notes

Reaction equation

[NH2:1][C:2]1[N:7]=[C:6]([NH2:8])[C:5]([O:9][C:10]2[C:15]([CH:16]([CH3:18])[CH3:17])=[CH:14][C:13]([OH:19])=[C:12]([I:20])[CH:11]=2)=[CH:4][N:3]=1.Br[CH2:22][CH2:23][O:24][Si:25]([C:28](C)(C)C)([CH3:27])[CH3:26].C([O-])([O-])=O.[K+].[K+]>CN(C=O)C>[I:20][C:12]1[C:13]([O:19][CH2:22][CH2:23][O:24][Si:25]([CH3:28])([CH3:27])[CH3:26])=[CH:14][C:15]([CH:16]([CH3:18])[CH3:17])=[C:10]([CH:11]=1)[O:9][C:5]1[C:6]([NH2:8])=[N:7][C:2]([NH2:1])=[N:3][CH:4]=1

Participants

Conditions

Temperature: 50 °C

Procedure

A mixture of 4-(2,4-Diamino-pyrimidin-5-yloxy)-2-iodo-5-isopropyl-phenol (0.3 g, 0.78 mmol), (2-bromoethoxy)-tert-butyl-dimethyl silane (0.28 g, 1.17 mmol), and K2CO3 (0.22 g, 1.56 mmol) in anhydrous DMF (5 ml) was heated at 50° C. for 16 hrs. Solvent was removed in vacuo. The residue was partitioned between methylene chloride and water. The combined organic extracts was washed with water, dried over Na2SO4, filtered and concentrated. Flash chromatography on silica (3% MeOH in methylene chloride with 0.1% NH4OH) gave 5-[5-Iodo-2-isopropyl-4-(2-trimethylsilanyloxy-ethoxy)-phenoxy]-pyrimidine-2,4-diamine (0.38 g, 90%) as a solid.

Workup

customSolvent was removed in vacuo
customThe residue was partitioned between methylene chloride and water
washThe combined organic extracts was washed with water
dry with materialdried over Na2SO4
filtrationfiltered
concentrationconcentrated

Sources & evidence

ORD record: ord-9b03ce1be71a4d5abe63a63c353275b5
Source dataset: uspto-grants-2011_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08008313B2

Reaction notes

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