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Updated: Mar 10, 2026

Synthesis of Zeolites Using the ADOR Assembly-Disassembly-Organization-Reassembly Route
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Synthesis of Zeolites Using the ADOR Assembly-Disassembly-Organization-Reassembly Route

Published on: April 3, 2016

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ゼオライトCANおよびAFI型ゼオリティクイミダゾラートフレームワークで,構造指向剤として大量アミドを用いて合成された12本の大きなリングポールの開口

Qi Shi1, Wei-Jian Xu2, Rui-Kang Huang2

  • 1College of Chemistry and Chemical Engineering, Taiyuan University of Technology , Taiyuan 030024, China.

Journal of the American Chemical Society
|December 13, 2016
PubMed
まとめ

デビュチルホルマミド (DBF) やディプロピルホルマミド (DPF) のような大容量のアミドは,大きな孔を持つゼオリチウムイミダゾラートフレームワーク (ZIF) を合成する構造指向剤として作用する. この研究では,最も大きな孔口を報告したAFI-[Zn(Im) 2) を含む12個の環孔を持つ新しいZIFを導入しています.

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Preparation of Amides01:29

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Amides are synthesized by treating carboxylic acids with amines in the presence of dehydrating agents like dicyclohexylcarbodiimide (DCC).
The DCC-promoted synthesis of amides begins with the protonation of DCC by carboxylic acid. The protonation makes it a better acceptor. Next, the addition of carboxylate to the protonated carbodiimide gives a reactive acylating agent.
Subsequently, the amine acts as a nucleophile that attacks the acylating agent to form a tetrahedral intermediate. In the...
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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.
Azide ions act as good nucleophiles and react with unhindered alkyl halides to form alkyl azides. Alkyl azides do not participate in further nucleophilic substitution reactions, thereby eliminating the chances of polyalkylated products. Alkyl azides are reduced by hydride-based reducing agents, like lithium aluminum...
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Direct alkylation is not a suitable method for synthesizing amines because it produces polyalkylated products. Gabriel synthesis is the most preferred method to exclusively make primary amines. The method uses phthalimide, which contains a protected form of nitrogen that participates in alkylation only once to predominantly give primary amines.
Strong bases like NaOH or KOH deprotonate the phthalimide to form the corresponding anion, which acts as a nucleophile. Further, the anion attacks an...
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Imines are formed under mildly acidic conditions. A pH of 4.5 is ideal for the reaction.
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