Acid amide - san amide (English spelling)

Japanese: 酸アミド - さんアミド(英語表記)acid amide
Acid amide - san amide (English spelling)
A general term for compounds produced by the condensation of carboxylic acids and their derivatives with amines. The general formula is RCONH2 . The hydrogen of ammonia is replaced with an acyl group. It can also include those produced from inorganic acids. Production methods include condensation of carboxylic acid derivatives with amines, hydrolysis of nitriles, heating of ammonium salts of carboxylic acids, and rearrangement of ketoximes. Acid amides tend to be colorless crystals and generally have high melting points. They are neutral. They are relatively insoluble in water. They produce carboxylic acids by hydrolysis. They produce amines by reduction. Silk and nylon are polymeric compounds of the acid amide type. Formic acid amide and formamide are liquids and are used as organic solvents.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:
カルボン酸およびその誘導体とアミンの縮合によって生成する化合物の総称。一般式 RCONH2 。アンモニアの水素をアシル基で置換した構造をもつ。無機酸から生成するものも含むことがある。製法にはカルボン酸誘導体とアミンの縮合,ニトリルの加水分解,カルボン酸のアンモニウム塩の加熱,ケトオキシムの転位反応がある。酸アミドは無色結晶が多く,一般に融点が高い。中性を示す。比較的水に溶けにくい。加水分解によってカルボン酸を生じる。還元するとアミンを生成する。絹やナイロンは酸アミド系高分子化合物である。またギ酸アミドおよびホルムアミドは液体で有機溶媒として使われる。

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