In historical chemistry, a compound formed by treating an amide with a strong base, creating a substance with modified reactive properties.
From 'amide' + '-ide' (chemical suffix), an older nomenclature term from 19th-century chemistry when compound naming was less systematic.
Amidides were important in early 20th-century organic synthesis because treating amides with bases creates powerful nucleophiles used in making new molecules—this is why sodium amide became a common reagent in labs even though we don't use the term 'amidide' much anymore.
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