Benzo-1,3-dioxole-5-methylamine → 4-((1,3-Benzodioxol-5-ylmethyl)amino)-2,6-dichloro quinazoline

HRID 990702Notes

Reaction equation

[Cl:1][C:2]1[N:11]=[C:10](Cl)[C:9]2[C:4](=[CH:5][CH:6]=[C:7]([Cl:13])[CH:8]=2)[N:3]=1.[CH2:14]([NH2:24])[C:15]1[CH:23]=[CH:22][C:21]2[O:20][CH2:19][O:18][C:17]=2[CH:16]=1>C(O)C>[O:20]1[C:21]2[CH:22]=[CH:23][C:15]([CH2:14][NH:24][C:10]3[C:9]4[C:4](=[CH:5][CH:6]=[C:7]([Cl:13])[CH:8]=4)[N:3]=[C:2]([Cl:1])[N:11]=3)=[CH:16][C:17]=2[O:18][CH2:19]1

Participants

Conditions

Temperature: 55 °C

Procedure

A solution of 2,4,6-trichloroquinazoline (0.186 g, 0.80 mmol) in ethanol (20 ml) was heated to 55° C. and piperonylamine (0.145 g, 0.96 mmol) was added. The resulting mixture was stirred at 55° C. over night. Volatiles were evaporated and the residue was partitioned between methylene chloride and saturated solution of ammonium hydroxide. The organic phase was dried over anhydrous sodium sulfate and concentrated in vacuo to yield 0.268 g (96% yield) of the title compound as a white solid. 1H NMR (300 MHz, DMSO) δ 4.59-4.63 (d, 2 H), 5.98 (s, 2 H), 6.86 (s, 2 H), 6.96 (s, 1 H), 7.62-7.66 (d, 1 H), 7.79-7.84 (d, 1 H), 8.46 (s, 1 H), 9.24-9.28 (t, 1 H).

Workup

customVolatiles were evaporated
customthe residue was partitioned between methylene chloride and saturated solution of ammonium hydroxide
dry with materialThe organic phase was dried over anhydrous sodium sulfate
concentrationconcentrated in vacuo

Sources & evidence

ORD record: ord-0ca1928c37e7487ba0c45d713a46dd8b
Source dataset: uspto-grants-2002_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06462044B2

Reaction notes

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