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ChemicalBook CAS DataBase List 6-Aminoquinoxaline

6-Aminoquinoxaline synthesis

10synthesis methods
-

Yield:6298-37-9 87%

Reaction Conditions:

in water;sodium carbonate

Steps:

1 6-Aminoquinoxaline
6-Aminoquinoxaline Glyoxal sodium bisulfite adduct (Aldrich, 14.3g, 50 mmol) was added in small portions to a solution of 1,2,4-triaminobenzene dihydrochloride (9.8 g, 50 mmol) in 200 ml of 10% by weight sodium carbonate in water. The reaction mixture was heated to 100° C. for two hours and then cooled to 0° C. The crystals formed were filtered off and dried in vacuo to give a crude yield of 7.06 g (a yield of 97%) of brown crystals. Recrystallization from benzene gave 6.32 g (a yield of 87%) yellow crystals, m.p. 157-8° C. Using various analytical procedures, these yellow crystals were determined to be 6-aminoquinoxaline.

References:

Allergan US6323204, 2001, B1

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