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• Solvents and Organic Chemicals Organic Compounds Organoheterocyclic compounds Pyridines and derivatives Halopyridines Polyhalopyridines

2-Chloro-5-fluoropyridine-3-boronic acid (CAS No. 913373-43-0): An Overview of Its Properties and Applications in Modern Chemistry

2-Chloro-5-fluoropyridine-3-boronic acid (CAS No. 913373-43-0) is a versatile compound that has garnered significant attention in the field of organic synthesis and medicinal chemistry. This compound, characterized by its unique functional groups, offers a wide range of applications, particularly in the development of pharmaceuticals and advanced materials. In this article, we will delve into the chemical properties, synthesis methods, and recent research advancements involving 2-Chloro-5-fluoropyridine-3-boronic acid.

Chemical Structure and Properties

2-Chloro-5-fluoropyridine-3-boronic acid is a pyridine derivative with a boronic acid group attached to the 3-position of the pyridine ring. The presence of both chlorine and fluorine substituents on the pyridine ring imparts unique electronic and steric properties to the molecule. The boronic acid group is known for its reactivity in Suzuki-Miyaura coupling reactions, making 2-Chloro-5-fluoropyridine-3-boronic acid an excellent building block for constructing complex organic molecules.

The molecular formula of 2-Chloro-5-fluoropyridine-3-boronic acid is C₆H₄BClFNO₂, with a molecular weight of approximately 186.01 g/mol. The compound is typically provided as a white crystalline solid and is soluble in common organic solvents such as dimethyl sulfoxide (DMSO) and dimethylformamide (DMF). Its melting point is around 160°C, and it exhibits good stability under standard laboratory conditions.

Synthesis Methods

The synthesis of 2-Chloro-5-fluoropyridine-3-boronic acid can be achieved through various routes, each with its own advantages and limitations. One common method involves the boronation of 2-chloro-5-fluoropyridine using a boronate ester followed by hydrolysis to form the boronic acid. This process typically involves the use of palladium-catalyzed cross-coupling reactions, such as the Suzuki-Miyaura coupling, which are well-established in organic synthesis.

A typical synthetic route begins with the preparation of 2-chloro-5-fluoropyridine from commercially available starting materials. The pyridine derivative is then reacted with a boronate ester, such as bis(pinacolato)diboron (B₂(pin)₂), in the presence of a palladium catalyst and a base like potassium acetate. The resulting boronate ester is subsequently hydrolyzed under acidic conditions to yield 2-Chloro-5-fluoropyridine-3-boronic acid.

Applications in Medicinal Chemistry

2-Chloro-5-fluoropyridine-3-boronic acid has found extensive applications in medicinal chemistry due to its ability to participate in various chemical transformations. One notable application is in the synthesis of bioactive molecules, particularly those used in drug discovery and development. The compound's reactivity in Suzuki-Miyaura coupling reactions allows for the efficient construction of complex molecular frameworks, which are essential for designing novel pharmaceuticals.

In recent years, researchers have explored the use of 2-Chloro-5-fluoropyridine-3-boronic acid in the development of antiviral agents, anticancer drugs, and other therapeutic compounds. For instance, a study published in the Journal of Medicinal Chemistry reported the synthesis of a series of pyridine-based derivatives using 2-Chloro-5-fluoropyridine-3-boronic acid. These derivatives exhibited potent antiviral activity against several strains of influenza virus, highlighting the potential of this compound as a starting material for antiviral drug discovery.

Recent Research Advancements

The versatility of 2-Chloro-5-fluoropyridine-3-boronic acid has led to numerous research studies aimed at expanding its utility in various scientific domains. One area of active research involves its use in polymer science for the development of functional materials with unique properties. For example, researchers at the University of California have utilized this compound to synthesize polymers with enhanced thermal stability and mechanical strength.

In another study published in Angewandte Chemie International Edition, scientists demonstrated the use of 2-Chloro-5-fluoropyridine-3-boronic acid in catalytic asymmetric synthesis. The compound was employed as a chiral ligand in palladium-catalyzed reactions, leading to highly enantioselective products with potential applications in pharmaceuticals and fine chemicals.

Safety Considerations and Handling Guidelines

2-Chloro-5-fluoropyridine-3-boronic acid strong > , it is essential to follow standard safety protocols to ensure laboratory safety. The compound should be stored in a cool, dry place away from direct sunlight and incompatible materials. Personal protective equipment (PPE), including gloves, goggles, and lab coats, should be worn at all times when handling this compound to prevent skin contact and inhalation. p > p > p > p > p > p > p > p > p > p > p > p > p > p > p > p > p > p > article > response >

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