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US 2003/0199700 A1Published application
Preparation method of 2,2'-bi-1H-imidazole using glyoxal and an ammonium salt
AssigneeAgency for Defense Development
InventorsJin Rai Cho, Soo Gyeong Cho, Eun Mee Goh, Jae Kyung Kim
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Abstract
Disclosed is a preparation method of 2,2′-bi-1H-imidazole using glyoxal and an ammonium salt as starting materials through a safe, simple and easily controlled synthetic process with a high yield.
Claims6
A preparation method of 2,2′-bi-1H-imidazole through a reaction of glyoxal with excess amount of an ammonium salt represented by the following reaction scheme:
- 3
- wherein, NH4+A represents an ammonium salt.
Dependencies are inferred from the claim text.