Definition of amide in English:

amide

nounˈeɪmʌɪdˈamʌɪd

Chemistry

1An organic compound containing the group —C(O)NH₂, derived from ammonia by replacement of a hydrogen atom by an acyl group.
〔化〕酰胺
Example sentencesExamples
- Primary amides are weakly basic and can form compounds with metals such as sodium, potassium, mercury, and cadmium, although heavy metal amides can be explosive.
- On the other hand, the permeability of the membrane for small uncharged solutes such as low molecular weight alcohols, amides, ketones etc., did not change.
- The resulting ester was saponified under basic conditions to the free acid, converted to the acyl chloride with thionyl chloride, and then to the amide with anhydrous ammonia gas.
- Nitriles are formed by heating amides with phosphorous pentoxide or by treating organic halogen compounds with sodium cyanide.
- Secondary and tertiary amides are prepared by reacting primary amides or nitriles with organic acids.
- They are intermediates in such reactions as the change of a carboxylic acid to its next highest homologue or to a derivative of a homologous acid such as an ester or an amide.
- The ester functional group can also be split by ammonia to give amides and alcohols.
- A second component of these molecules was identified as an amide or an amino acid.
1. 1.1 A compound derived from ammonia by replacement of a hydrogen atom by a metal, containing the anion NH₂⁻
  离子型酰胺
  with modifier sodium amide
  Example sentencesExamples
  A second component of these molecules was identified as an amide or an amino acid.
  Primary amides are weakly basic and can form compounds with metals such as sodium, potassium, mercury, and cadmium, although heavy metal amides can be explosive.
  The resulting ester was saponified under basic conditions to the free acid, converted to the acyl chloride with thionyl chloride, and then to the amide with anhydrous ammonia gas.
  On the other hand, the permeability of the membrane for small uncharged solutes such as low molecular weight alcohols, amides, ketones etc., did not change.
  They are intermediates in such reactions as the change of a carboxylic acid to its next highest homologue or to a derivative of a homologous acid such as an ester or an amide.
  The ester functional group can also be split by ammonia to give amides and alcohols.
  Nitriles are formed by heating amides with phosphorous pentoxide or by treating organic halogen compounds with sodium cyanide.
  Secondary and tertiary amides are prepared by reacting primary amides or nitriles with organic acids.

Origin

Mid 19th century: from ammonia + -ide.

Definition of amide in US English:

amide

noun

Chemistry

1An organic compound containing the group —C(O)NH₂, related to ammonia by replacing a hydrogen atom by an acyl group.
〔化〕酰胺
Example sentencesExamples
- Nitriles are formed by heating amides with phosphorous pentoxide or by treating organic halogen compounds with sodium cyanide.
- They are intermediates in such reactions as the change of a carboxylic acid to its next highest homologue or to a derivative of a homologous acid such as an ester or an amide.
- The ester functional group can also be split by ammonia to give amides and alcohols.
- On the other hand, the permeability of the membrane for small uncharged solutes such as low molecular weight alcohols, amides, ketones etc., did not change.
- Primary amides are weakly basic and can form compounds with metals such as sodium, potassium, mercury, and cadmium, although heavy metal amides can be explosive.
- Secondary and tertiary amides are prepared by reacting primary amides or nitriles with organic acids.
- A second component of these molecules was identified as an amide or an amino acid.
- The resulting ester was saponified under basic conditions to the free acid, converted to the acyl chloride with thionyl chloride, and then to the amide with anhydrous ammonia gas.
1. 1.1 A compound derived from ammonia by replacement of a hydrogen atom by a metal, containing the anion NH₂⁻
  离子型酰胺
  with modifier sodium amide
  Example sentencesExamples
  Nitriles are formed by heating amides with phosphorous pentoxide or by treating organic halogen compounds with sodium cyanide.
  Primary amides are weakly basic and can form compounds with metals such as sodium, potassium, mercury, and cadmium, although heavy metal amides can be explosive.
  They are intermediates in such reactions as the change of a carboxylic acid to its next highest homologue or to a derivative of a homologous acid such as an ester or an amide.
  Secondary and tertiary amides are prepared by reacting primary amides or nitriles with organic acids.
  On the other hand, the permeability of the membrane for small uncharged solutes such as low molecular weight alcohols, amides, ketones etc., did not change.
  The ester functional group can also be split by ammonia to give amides and alcohols.
  A second component of these molecules was identified as an amide or an amino acid.
  The resulting ester was saponified under basic conditions to the free acid, converted to the acyl chloride with thionyl chloride, and then to the amide with anhydrous ammonia gas.

Origin

Mid 19th century: from ammonia + -ide.

词汇	amide
释义	Definition of amide in English: amide nounˈeɪmʌɪdˈamʌɪd Chemistry 1An organic compound containing the group —C(O)NH₂, derived from ammonia by replacement of a hydrogen atom by an acyl group. 〔化〕酰胺 Example sentencesExamples Primary amides are weakly basic and can form compounds with metals such as sodium, potassium, mercury, and cadmium, although heavy metal amides can be explosive. On the other hand, the permeability of the membrane for small uncharged solutes such as low molecular weight alcohols, amides, ketones etc., did not change. The resulting ester was saponified under basic conditions to the free acid, converted to the acyl chloride with thionyl chloride, and then to the amide with anhydrous ammonia gas. Nitriles are formed by heating amides with phosphorous pentoxide or by treating organic halogen compounds with sodium cyanide. Secondary and tertiary amides are prepared by reacting primary amides or nitriles with organic acids. They are intermediates in such reactions as the change of a carboxylic acid to its next highest homologue or to a derivative of a homologous acid such as an ester or an amide. The ester functional group can also be split by ammonia to give amides and alcohols. A second component of these molecules was identified as an amide or an amino acid. 1.1 A compound derived from ammonia by replacement of a hydrogen atom by a metal, containing the anion NH₂⁻ 离子型酰胺 with modifier sodium amide Example sentencesExamples A second component of these molecules was identified as an amide or an amino acid. Primary amides are weakly basic and can form compounds with metals such as sodium, potassium, mercury, and cadmium, although heavy metal amides can be explosive. The resulting ester was saponified under basic conditions to the free acid, converted to the acyl chloride with thionyl chloride, and then to the amide with anhydrous ammonia gas. On the other hand, the permeability of the membrane for small uncharged solutes such as low molecular weight alcohols, amides, ketones etc., did not change. They are intermediates in such reactions as the change of a carboxylic acid to its next highest homologue or to a derivative of a homologous acid such as an ester or an amide. The ester functional group can also be split by ammonia to give amides and alcohols. Nitriles are formed by heating amides with phosphorous pentoxide or by treating organic halogen compounds with sodium cyanide. Secondary and tertiary amides are prepared by reacting primary amides or nitriles with organic acids. Origin Mid 19th century: from ammonia + -ide. Definition of amide in US English: amide noun Chemistry 1An organic compound containing the group —C(O)NH₂, related to ammonia by replacing a hydrogen atom by an acyl group. 〔化〕酰胺 Example sentencesExamples Nitriles are formed by heating amides with phosphorous pentoxide or by treating organic halogen compounds with sodium cyanide. They are intermediates in such reactions as the change of a carboxylic acid to its next highest homologue or to a derivative of a homologous acid such as an ester or an amide. The ester functional group can also be split by ammonia to give amides and alcohols. On the other hand, the permeability of the membrane for small uncharged solutes such as low molecular weight alcohols, amides, ketones etc., did not change. Primary amides are weakly basic and can form compounds with metals such as sodium, potassium, mercury, and cadmium, although heavy metal amides can be explosive. Secondary and tertiary amides are prepared by reacting primary amides or nitriles with organic acids. A second component of these molecules was identified as an amide or an amino acid. The resulting ester was saponified under basic conditions to the free acid, converted to the acyl chloride with thionyl chloride, and then to the amide with anhydrous ammonia gas. 1.1 A compound derived from ammonia by replacement of a hydrogen atom by a metal, containing the anion NH₂⁻ 离子型酰胺 with modifier sodium amide Example sentencesExamples Nitriles are formed by heating amides with phosphorous pentoxide or by treating organic halogen compounds with sodium cyanide. Primary amides are weakly basic and can form compounds with metals such as sodium, potassium, mercury, and cadmium, although heavy metal amides can be explosive. They are intermediates in such reactions as the change of a carboxylic acid to its next highest homologue or to a derivative of a homologous acid such as an ester or an amide. Secondary and tertiary amides are prepared by reacting primary amides or nitriles with organic acids. On the other hand, the permeability of the membrane for small uncharged solutes such as low molecular weight alcohols, amides, ketones etc., did not change. The ester functional group can also be split by ammonia to give amides and alcohols. A second component of these molecules was identified as an amide or an amino acid. The resulting ester was saponified under basic conditions to the free acid, converted to the acyl chloride with thionyl chloride, and then to the amide with anhydrous ammonia gas. Origin Mid 19th century: from ammonia + -ide.
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