Hydrochloric Acid → 4-(7-Benzofuranylamino)-6-methoxy-7-[3-(4-methylpiperazin-1-yl)propoxy]quinazoline

HRID 22767Notes

Reaction equation

Cl[C:2]1[C:11]2[C:6](=[CH:7][C:8]([O:14][CH2:15][CH2:16][CH2:17][N:18]3[CH2:23][CH2:22][N:21]([CH3:24])[CH2:20][CH2:19]3)=[C:9]([O:12][CH3:13])[CH:10]=2)[N:5]=[CH:4][N:3]=1.[NH2:25][C:26]1[C:34]2[O:33][CH:32]=[CH:31][C:30]=2[CH:29]=[CH:28][CH:27]=1.Cl>C(O)(C)C>[O:33]1[C:34]2[C:26]([NH:25][C:2]3[C:11]4[C:6](=[CH:7][C:8]([O:14][CH2:15][CH2:16][CH2:17][N:18]5[CH2:23][CH2:22][N:21]([CH3:24])[CH2:20][CH2:19]5)=[C:9]([O:12][CH3:13])[CH:10]=4)[N:5]=[CH:4][N:3]=3)=[CH:27][CH:28]=[CH:29][C:30]=2[CH:31]=[CH:32]1

Participants

Conditions

Temperature: 85 °C

Procedure

A mixture of 4-chloro-6-methoxy-7-[3-(4-methylpiperazin-1-yl)propoxy]quinazoline (0.1 g), 7-aminobenzofuran (0.057 g), isopropanol (4 ml) and a solution of hydrogen chloride in isopropanol (6M, 0.06 ml) was stirred and heated to 85° C. for 3 hours. The resultant mixture was cooled to ambient temperature and the precipitate was isolated by filtration, washed in turn with a 1:1 mixture of diethyl ether and isopropanol and with diethyl ether and dried under vacuum. There was thus obtained the title compound (0.09 g) as a dihydrochloride salt; NMR Spectrum: (DMSOd6 and CF3COOD) 2.35 (m, 2H), 2.9 (s, 3H), 3.45 (br m, 5H), 3.8 (br m, 5H), 4.05 (s, 3H), 4.35 (t, 2H), 7.1 (d, 1H), 7.45 (m, 3H), 7.75 (d, 1H), 8.05 (s, 1H), 8.25 (s, 1H), 8.8 (s, 1H); Mass Spectrum: M+H+ 448.

Workup

customthe precipitate was isolated by filtration
washwashed in turn with a 1:1 mixture of diethyl ether and isopropanol and with diethyl ether
customdried under vacuum

Sources & evidence

ORD record: ord-9afff1b7f8194970a2c866143330cf5a
Source dataset: uspto-grants-2005_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06849625B2

Reaction notes

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