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Title: Diamines  
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Subject: Phoneutria nigriventer toxin-3
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A diamine is a type of polyamine with exactly two amino groups. Diamines are mainly used as monomers to prepare polyamides, polyimides and polyureas. In terms of quantities produced, 1,6-diaminohexane, a precursor to Nylon 6-6, is most important, followed by ethylenediamine.[1] Hydrazine (H2NNH2) is usually not considered a diamine since it is neither an amine nor is it dibasic.

Aliphatic diamines

Linear aliphatic diamines

Branched aliphatic diamines

Derivatives of ethylenediamine are prominent:


Xylylenediamines are classified as alkylamines since the amine is not directly attached to an aromatic ring.

  • o-xylylenediamine or OXD
  • m-xylylenediamine or MXD
  • p-xylylenediamine or PXD

Aromatic diamines

Three phenylenediamines are known:[2]

Various N-methylated derivatives of the phenylenediamines are known:

Examples with two aromatic rings include derivatives of biphenyl and naphthalene:


External links

  • Medical Subject Headings (MeSH)
  • Synthesis of diamines
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