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Palladium-Catalyzed Amination of Protected Phenylalanine Iodides Using (Hetero)aryl Amines as Nucleophiles

Anku Sharma1, Kamya Rao1, Lipat Kaur1

  • 1Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, S. A. S. Nagar, Punjab160062, India.

The Journal of Organic Chemistry
|September 11, 2026
PubMed

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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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Preparation of 1° Amines: Gabriel Synthesis

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.
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Preparation of Amines: Alkylation of Ammonia and Amines

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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