Phosphorus oxychloride → 4-chloro-7-(methyloxy)-5-(tetrahydro-2H-pyran-4-yloxy)quinazoline

HRID 631352Notes

Reaction equation

[CH3:1][O:2][C:3]1[CH:12]=[C:11]2[C:6]([C:7](=O)[NH:8][CH:9]=[N:10]2)=[C:5]([O:14][CH:15]2[CH2:20][CH2:19][O:18][CH2:17][CH2:16]2)[CH:4]=1.O=P(Cl)(Cl)[Cl:23].C(N(CC)C(C)C)(C)C>C(Cl)CCl>[Cl:23][C:7]1[C:6]2[C:11](=[CH:12][C:3]([O:2][CH3:1])=[CH:4][C:5]=2[O:14][CH:15]2[CH2:20][CH2:19][O:18][CH2:17][CH2:16]2)[N:10]=[CH:9][N:8]=1

Participants

Conditions

Temperature: 100 °C

Procedure

A mixture of 7-methoxy-5-(tetrahydro-2H-pyran-4-yloxy)quinazolin-4(3H)-one (0.60 g, 2.17 mmol), POCl3 (0.5 mL), and N,N-diisopropylethylamine (1.5 mL) in ClCH2CH2Cl (6 mL) was heated at 100° C. for 4 hours. After the solvent and reagents were evaporated under reduced pressure, toluene was added to the residue, and the solution was evaporated under reduced pressure. The residue was dried under vacuum to afford 4-chloro-7-methoxy-5-(tetrahydro-2H-pyran-4-yloxy)quinazoline as a brown solid. LC-MS (ESI) m/z 295 (M+H)+.

Workup

customAfter the solvent and reagents were evaporated under reduced pressure, toluene
additionwas added to the residue
customthe solution was evaporated under reduced pressure
customThe residue was dried under vacuum

Sources & evidence

ORD record: ord-5c5f407567e44040bf5b36e6693c8606
Source dataset: uspto-grants-2016_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09320739B2

Reaction notes

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