Potassium Carbonate → 6-Methoxy-4-phenoxy-7-(2-piperidinoethoxy)quinazoline

HRID 1791699Notes

Reaction equation

Cl.Cl[CH2:3][CH2:4][N:5]1[CH2:10][CH2:9][CH2:8][CH2:7][CH2:6]1.[OH:11][C:12]1[CH:21]=[C:20]2[C:15]([C:16]([O:22][C:23]3[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=3)=[N:17][CH:18]=[N:19]2)=[CH:14][C:13]=1[O:29][CH3:30].C(=O)([O-])[O-].[K+].[K+]>CN(C=O)C>[CH3:30][O:29][C:13]1[CH:14]=[C:15]2[C:20](=[CH:21][C:12]=1[O:11][CH2:3][CH2:4][N:5]1[CH2:10][CH2:9][CH2:8][CH2:7][CH2:6]1)[N:19]=[CH:18][N:17]=[C:16]2[O:22][C:23]1[CH:24]=[CH:25][CH:26]=[CH:27][CH:28]=1

Participants

Conditions

Temperature: 110 °C

Procedure

1-(2-Chloroethyl)piperidine hydrochloride (0.83 g, 4.5 mmol) was added to 7-hydroxy-6-methoxy-4-phenoxyquinazoline (1.0 g, 3.73 mmol), (prepared as described for the starting material in Example 1), and potassium carbonate (2.6 g, 18.8 mmol) in DMF (30 ml), and the mixture heated at 110° C. for 2.5 hours and allowed to cool. The insolubles were removed by filtration, and the volatiles were removed from the filtrate by evaporation. The residue was purified by column chromatography eluting with methylene chloride/methanol (9/1) to give 6-methoxy-4-phenoxy-7-(2-piperidinoethoxy)quinazoline (1.2 g, 85%).

Workup

custom(prepared
temperatureto cool
customThe insolubles were removed by filtration
customthe volatiles were removed from the filtrate by evaporation
customThe residue was purified by column chromatography
washeluting with methylene chloride/methanol (9/1)

Sources & evidence

ORD record: ord-f62b14e0a79642679a6502437d71f53f
Source dataset: uspto-grants-2006_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07074800B1

Reaction notes

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