Acetonitrile → 2-(7-methylspiro[2H-benzofuran-3,1'-cyclopropane]-4-yl)oxy-5-nitro-pyrimidine

HRID 1484638Notes

Reaction equation

HRID 1484638 reaction equation
[CH3:1][C:2]1[CH:3]=[CH:4][C:5]([OH:13])=[C:6]2[C:10]3([CH2:12][CH2:11]3)[CH2:9][O:8][C:7]=12.C(#N)C.Cl[C:18]1[N:23]=[CH:22][C:21]([N+:24]([O-:26])=[O:25])=[CH:20][N:19]=1>>[CH3:1][C:2]1[C:7]2[O:8][CH2:9][C:10]3([CH2:12][CH2:11]3)[C:6]=2[C:5]([O:13][C:18]2[N:23]=[CH:22][C:21]([N+:24]([O-:26])=[O:25])=[CH:20][N:19]=2)=[CH:4][CH:3]=1

Participants

4

Reactant 3

HCID 6342AcetonitrileHCID 825442-Chloro-5-nitropyrimidineHCID 574113017-methylspiro[2H-benzofuran-3,1-cyclopropane]-4-ol2×

Product 1

HCID 679602182-(7-methylspiro[2H-benzofuran-3,1'-cyclopropane]-4-yl)oxy-5-nitro-pyrimidineYield 86.2%

Conditions

Temperature
80 °C

Procedure

To a solution of 7-methylspiro[2H-benzofuran-3,1′-cyclopropane]-4-ol (Intermediate 13, 176 mg, 1 mmol) in dry Acetonitrile (4 ml) potassium carbonate (207 mg, 1.5 mmol) and then 2-chloro-5-nitropyrimidine (159 mg, 1 mmol) were added and the reaction mixture was stirred for 24 hours at 80° C. After cooling the reaction mixture was quenched with water (2 ml), diluted with brine (10 ml) and extracted with ethyl acetate (2×20 ml). The organic layer was dried over sodium sulfate, filtered and evaporated affording the title compound (258 mg) as an orange solid that was used in the next step as crude material without further purification.

Workup

  1. temperatureAfter cooling the reaction mixture
  2. customwas quenched with water (2 ml)
  3. additiondiluted with brine (10 ml)
  4. extractionextracted with ethyl acetate (2×20 ml)
  5. dry with materialThe organic layer was dried over sodium sulfate
  6. filtrationfiltered
  7. customevaporated

Sources & evidence

ORD record
ord-2f8e1f593e4e4e74bbf3e2e24a7f5d88
Source dataset
uspto-grants-2016_08
Patent number
US09422272B2

Reaction notes

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