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119584-75-7

5-Bromo-quinazoline-2,4-diamine synthesis

7synthesis methods
63365-23-1 Synthesis
2-AMINO-6-NITROBENZONITRILE

63365-23-1
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5-Bromo-quinazoline-2,4-diamine

119584-75-7
18 suppliers
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Yield:-

Steps:

Multi-step reaction with 3 steps
1: 1.) sodium nitrite, sulfuric acid, 2.) copper(I) bromide, aq. hydrochloric acid / 1.) acetic acid, 40 deg C, 30 min, 2.) 65 to 90 deg C
2: 78 percent / iron, concentrated hydrochloric acid / methanol / 0.17 h
3: 55 percent / bis-(2-methoxy-ethyl) ether / 3 h / 130 - 140 °C

References:

Harris, Neil V.;Smith, Christopher;Bowden, Keith [Journal of Medicinal Chemistry,1990,vol. 33,# 1,p. 434 - 444]

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