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ChemicalBook CAS DataBase List Benzoguanamine
91-76-9

Benzoguanamine synthesis

5synthesis methods
Benzoguanamine closely resembles melamine in that reaction with formaldehyde gives methylol derivatives and then resinous condensates. Butylated benzoguanamine-formaldehyde resins have found some use in surface coatings. In a typical preparation, benzoguanamine (1 mole) is heated with formalin (3 mole formaldehyde) at pH 8.3 and 70-80°C until the guanamine has dissolved. n-Butanol (9 mole) and a small amount of hydrochloric acid are added and the azeotrope distilled off until removal of water is complete. Like their melamine counterparts, butylated benzoguanamine-formaldehyde resins are most commonly used in admixture with alkyd resins. The resulting coatings are very similar to those based on melamine but they show improved resistance to alkalis.
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Yield:91-76-9 70%

Reaction Conditions:

with sodium carbonate;tetrakis(triphenylphosphine) palladium(0) in 1,2-dimethoxyethaneHeating;Suzuki cross-coupling reaction;

References:

Cooke;Augier de Cremiers;Rotello;Tarbit;Vanderstraeten [Tetrahedron,2001,vol. 57,# 14,p. 2787 - 2789]

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