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Facile Synthesis of Amine-Functionalized CdTe Quantum Dots Dependence on Chain Length of Amines

HyeLan An1, Leeseung Kang1, Chan Gi Lee1

  • 1Materials Science and Chemical Engineering Center, Institute for Advanced Engineering, 17180, Republic of Korea.

Journal of Nanoscience and Nanotechnology
|August 7, 2019
PubMed

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Various carboxylic acid derivatives (such as acid chlorides, esters, and anhydrides) can be used for the acylation of amines to yield amides. The reaction requires two equivalents of amines. The first amine molecule functions as a nucleophile and attacks the carbonyl carbon to produce a tetrahedral intermediate. This is followed by the loss of the leaving group and restoration of the C=O bond.
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Direct alkylation of ammonia produces polyalkylated amines, along with a quaternary ammonium salt. To exclusively prepare primary amines, the azide synthesis method can be used.
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Alkylation is one of the methods used to prepare amines. Direct alkylation of ammonia or a primary amine with an alkyl halide gives polyalkylated amines along with a quaternary ammonium salt through successive SN2 reactions. This process of making the quaternary salt through the direct alkylation method is called exhaustive alkylation.
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