Sodium hydride → 5-[Cyano-(5-isopropyl-2,6-dimethoxy-pyrimidin-4-yl)-methyl]-isophthalonitrile

HRID 426278Notes

Reaction equation

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

Participants

Conditions

Temperature: 0 °C

Procedure

5-Cyanomethyl-isophthalonitrile (0.285 g, 1.70 mmol) and 4-chloro-5-isopropyl-2,6-dimethoxy-pyrimidine (0.360 g, 1.66 mmol) was dissolved in DMF (8.0 mL) and cooled to 0° C. 60% Sodium hydride (0.136 g, 3.40 mmol) was added portionwise and the reaction was stirred at 0° C. for 2 h, then rt overnight. The reaction was quenched with saturated ammonium chloride solution and pH was adjusted to ˜6.0 with 1N HCl. Mixture was extracted with ethyl acetate and organic layer was dried (MgSO4) and concentrated. The resulting residue was purified by flash column chromatography (silica gel, 10 to 50% ethyl acetate/hexane) to give a white solid (0.2457 g, 43%). 1H NMR (300 MHz, CDCl3): δ 7.90 (s, 3H), 5.46 (s, 1H), 3.96 (s, 3H), 3.89 (s, 3H), 3.05-2.9 (m, 1H), 1.16 (d, J=6.9 Hz, 3H), 1.15 (d, J=7.2 Hz, 3H).

Workup

customrt overnight
customThe reaction was quenched with saturated ammonium chloride solution and pH
extractionMixture was extracted with ethyl acetate and organic layer
dry with materialwas dried (MgSO4)
concentrationconcentrated
customThe resulting residue was purified by flash column chromatography (silica gel, 10 to 50% ethyl acetate/hexane)

Sources & evidence

ORD record: ord-6fc24924f44c46e9b752ce10f90c2dc6
Source dataset: uspto-grants-2012_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08106064B2

Reaction notes

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