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6,7,8-trimethoxyquinazoline-2,4(1H,3H)-dione synthesis

4synthesis methods
Benzoic acid, 2-[(aminocarbonyl)amino]-3,4,5-trimethoxy-

116274-49-8
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6,7,8-trimethoxyquinazoline-2,4(1H,3H)-dione

30896-98-1
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Yield:30896-98-1 99.5%

Reaction Conditions:

with sodium hydroxide in water at 55 - 57; for 3 h;pH > 13;

References:

Hammen;Allen [Journal of Heterocyclic Chemistry,1987,vol. 24,# 6,p. 1701 - 1703]