Organic synthesis is the cornerstone of chemical innovation, and the availability of versatile building blocks is crucial for advancing research and industrial applications. tert-Butyl (4-aminophenyl)carbamate (CAS 71026-66-9) is one such compound, valued for its dual functionality and the strategic utility of its tert-butoxycarbonyl (Boc) protecting group. This article explores its significance in advanced organic synthesis and provides guidance on sourcing for chemists.

Chemical Structure and Reactivity

tert-Butyl (4-aminophenyl)carbamate, with the molecular formula C11H16N2O2 and molecular weight of 208.26, presents a phenyl ring substituted with an amine group and a Boc-protected amine group. The Boc group serves as a temporary shield for the amine, preventing it from participating in reactions while other transformations are carried out on the molecule. This protection strategy is fundamental in multi-step organic syntheses.

Key aspects of its reactivity include:

• Selective Deprotection: The Boc group can be readily removed under mild acidic conditions (e.g., using trifluoroacetic acid or HCl in organic solvents) to liberate the free amine. This allows for the introduction of various functional groups or the formation of amide bonds, urea linkages, or other amine derivatives.
• Aromatic Amine Reactivity: The free aniline moiety is nucleophilic and can undergo a range of reactions typical of aromatic amines, such as acylation, alkylation, diazotization, and coupling reactions.
• Building Block for Heterocycles: Its structure makes it an excellent precursor for synthesizing complex heterocyclic compounds, which are prevalent in pharmaceuticals, agrochemicals, and materials science.

Applications in Synthesis

The versatility of tert-Butyl (4-aminophenyl)carbamate makes it a sought-after intermediate for:

• API Synthesis: As a key intermediate, it is used in the production of various Active Pharmaceutical Ingredients, contributing to the development of new drugs.
• Peptide Synthesis: While not a direct amino acid, its Boc-protected amine functionality is conceptually related to solid-phase peptide synthesis strategies, allowing for incorporation into peptide-like structures.
• Material Science: The compound can be functionalized and polymerized to create novel materials with specific electronic or optical properties.
• Fine Chemical Manufacturing: It serves as a starting material for a wide array of other specialized organic chemicals.

Sourcing and Purchasing Information

For chemists engaged in organic synthesis, reliable access to high-purity tert-Butyl (4-aminophenyl)carbamate is essential. When looking to buy this intermediate, consider the following:

• Purity: Aim for material with a minimum purity of 99% to ensure predictable synthetic outcomes.
• Supplier Reliability: Partner with reputable chemical suppliers or manufacturers, particularly those in China known for their fine chemical production capabilities.
• Technical Data: Ensure access to comprehensive product information, including CAS numbers, molecular weights, and safety data sheets.
• Quotes and Samples: Obtain quotes for desired quantities and request samples for evaluation before committing to larger purchases.

By strategically utilizing tert-Butyl (4-aminophenyl)carbamate and sourcing it from dependable suppliers, organic chemists can effectively drive their synthesis projects forward, leading to the creation of innovative chemical products.