• 1. An atom efficient route to N-aryl and N-alkyl pyrrolines by transition metal catalysis?
  Supaporn Sawadjoon,Joseph S. M. Samec Org. Biomol. Chem., 2011,9, 2548-2554
• 2. An air-stable organometallic polymer containing titanafluorene moieties obtained by the Sonogashira–Hagihara cross-coupling polycondensation?
  Alvin Tanudjaja,Shinsuke Inagi,Fusao Kitamura,Toshikazu Takata,Ikuyoshi Tomita Dalton Trans., 2021,50, 3037-3043
• 3. An artificial enzyme cascade amplification strategy for highly sensitive and specific detection of breast cancer-derived exosomes?
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• 4. An aptasensor for the detection of ampicillin in milk using a personal glucose meter
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• 5. An integrated digital microfluidic chip for multiplexed proteomic sample preparation and analysis by MALDI-MS?
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• Solvents and Organic Chemicals Organic Compounds Organic acids and derivatives Carboxylic acids and derivatives Alpha amino acids

Introduction to 1-aminocyclopropane-1-carboxylic acid (CAS No: 22059-21-8)

1-aminocyclopropane-1-carboxylic acid (CAS No: 22059-21-8), commonly abbreviated as ACC, is a significant organic compound with a three-membered cyclopropane ring substituted with an amino group and a carboxylic acid moiety. This unique structural configuration imparts remarkable reactivity and biological significance, making it a crucial intermediate in pharmaceutical synthesis, agrochemical production, and biochemical research. The compound's molecular formula, C?H?NO?, reflects its simplicity yet functional diversity, which has been harnessed in various synthetic pathways and biological processes.

The structure of 1-aminocyclopropane-1-carboxylic acid is characterized by its strained cyclopropane ring, which enhances its susceptibility to nucleophilic attack and rearrangement reactions. This feature has been exploited in the development of synthetic methodologies for complex molecules, particularly in the field of drug discovery. The presence of both an amino group and a carboxylic acid group allows for further functionalization via amide bond formation, esterification, or amidation reactions, making it a versatile building block in medicinal chemistry.

In recent years, 1-aminocyclopropane-1-carboxylic acid has garnered considerable attention due to its role as a key intermediate in the biosynthesis of plant hormones known as auxins. Specifically, it is the precursor to indole-3-acetic acid (IAA), one of the most widely studied auxins that regulates various aspects of plant growth and development. The enzyme aminocyclopropane-1-carboxylate synthase (ACS) catalyzes the conversion of ACC to IAA, a process that is critical for root elongation, stem elongation, fruit development, and seed germination. Understanding this pathway has enabled researchers to develop novel agrochemicals that modulate plant growth responses.

The industrial significance of 1-aminocyclopropane-1-carboxylic acid extends beyond plant biology. In pharmaceutical research, it serves as a precursor for the synthesis of various bioactive molecules. For instance, derivatives of ACC have been investigated for their potential in treating neurological disorders due to their ability to interact with specific neurotransmitter systems. Additionally, the compound's structural motif has been incorporated into designed peptides and proteins aimed at targeting bacterial infections or modulating inflammatory responses.

Recent advancements in synthetic chemistry have led to more efficient methods for producing high-purity 1-aminocyclopropane-1-carboxylic acid on an industrial scale. These innovations include biocatalytic routes leveraging engineered microorganisms capable of overexpressing ACS enzymes or alternative synthetic pathways that minimize byproduct formation. Such improvements have not only enhanced the availability of ACC but also reduced production costs, making it more accessible for both academic research and commercial applications.

The chemical reactivity of 1-aminocyclopropane-1-carboxylic acid allows for diverse applications in material science as well. Its ability to undergo polymerization or copolymerization with other monomers has been explored in creating novel polymers with unique mechanical properties. These materials exhibit enhanced flexibility or biodegradability when functionalized with ACC-derived groups, opening avenues for sustainable packaging solutions or biocompatible scaffolds for tissue engineering.

In summary, 1-aminocyclopropane-1-carboxylic acid (CAS No: 22059-21-8) remains a cornerstone compound in multiple scientific disciplines due to its structural versatility and biological relevance. Its role in plant hormone biosynthesis underscores its importance in agriculture and horticulture, while its synthetic utility makes it indispensable in pharmaceutical development. As research continues to uncover new applications for this compound, ACC is poised to play an even greater role in advancing both fundamental science and applied technologies.

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