Water → 2-{[4-({[Tert-butyl(dimethyl)silyl]oxy}methyl)-6-ethylpyridin-2-yl]amino}-1,3-thiazole-5-carbonitrile

HRID 1814011Notes

Reaction equation

[Si:1]([O:8][CH2:9][C:10]1[CH:15]=[C:14]([CH2:16][CH3:17])[N:13]=[C:12]([NH2:18])[CH:11]=1)([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2].Cl[C:20]1[S:21][C:22]([C:25]#[N:26])=[CH:23][N:24]=1.[H-].[Na+].O>C1COCC1>[Si:1]([O:8][CH2:9][C:10]1[CH:15]=[C:14]([CH2:16][CH3:17])[N:13]=[C:12]([NH:18][C:20]2[S:21][C:22]([C:25]#[N:26])=[CH:23][N:24]=2)[CH:11]=1)([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2]

Participants

Conditions

Temperature: 75 °C

Procedure

4-({[tert-Butyl(dimethyl)silyl]oxy}methyl)-6-ethylpyridin-2-amine 12-1 (0.159 g, 0.60 mmol) was dissolved in 2 mL THF. 2-Chloro-1,3-thiazole-5-carbonitrile (0.103 g, 0.72 mmol) and sodium hydride (60% dispersion in mineral oil) (0.057 g, 2.38 mmol) were added and the solution was heated to 75° C. After 4 hours more 2-chloro-1,3-thiazole-5-carbonitrile (0.043 g, 0.30 mmol) and sodium hydride (0.014 g, 0.60 mmol) were added. After 5.5 hours more 2-chloro-1,3-thiazole-5-carbonitrile (0.086 g, 0.60 mmol) and sodium hydride (0.029 g, 1.19 mmol) were added. After 8.5 hours the solution was allowed to cool to room temperature. H2O was added and the reaction was concentrated in vacuo (to remove THF). 1N HCl was added to adjust to neutral pH. The resulting precipitate was filtered and washed with water to afford the desired compound 12-2 as a yellow solid. 1H NMR (DMSO-d6) δ 12.23 (s, 1H), 8.25 (s, 1H), 6.70 (s, 1H), 6.83 (s, 1H), 4.73 (bs, 2H), 2.79 (q, 2H, J=7.63 Hz), 1.32 (t, 3H, J=7.63 Hz), 0.94 (s, 9H), 0.10 (s, 6H).

Workup

temperatureto cool to room temperature
concentrationthe reaction was concentrated in vacuo (to remove THF)
addition1N HCl was added
filtrationThe resulting precipitate was filtered
washwashed with water

Sources & evidence

ORD record: ord-9811d23072164c63880ddd10cac442eb
Source dataset: uspto-grants-2005_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06875767B2

Reaction notes

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