BOC Sciences provides comprehensive, cost-effective custom amination services backed by deep expertise in C–N bond-forming reactions, catalyst selection, and process development. We design and execute amination strategies — from reductive amination and Buchwald–Hartwig cross-coupling to biocatalytic and direct C–H amination — to deliver primary, secondary, tertiary, and heterocyclic amines at milligram to kilogram scale. Every project is supported by rigorous analytical characterization and process documentation.
Amination is the process of introducing an amine group (–NH2, –NHR, or –NR2) into an organic molecule. It is one of the most fundamental and widely practiced transformations in synthetic chemistry, forming the C–N bonds that define the structure and function of most pharmaceuticals, agrochemicals, and functional materials. Recent analyses indicate that approximately one quarter of C–N bond-forming reactions in the pharmaceutical industry proceed via reductive amination alone, while palladium-catalyzed methods such as Buchwald–Hartwig coupling account for a substantial share of aryl amine synthesis. BOC Sciences integrates this breadth of amination chemistry into a single, client-focused service platform.
BOC Sciences performs reductive amination of aldehydes and ketones with primary or secondary amines to construct amine products with controlled chemoselectivity and minimal over-alkylation.
We employ SN2 and SNAr pathways to install amine groups on alkyl halides, sulfonates, and activated aryl/heteroaryl systems with careful control of mono- vs. poly-alkylation selectivity.
BOC Sciences applies palladium-catalyzed Buchwald–Hartwig C–N cross-coupling to connect aryl/heteroaryl halides or pseudohalides with primary and secondary amines under optimized conditions.
Our copper-catalyzed amination — including Ullmann-type and Chan–Lam coupling — provides cost-effective alternatives to palladium for aryl C–N bond construction at moderate temperatures.
BOC Sciences applies metal-catalyzed and base-promoted hydroamination to add N–H bonds across unsaturated C–C bonds, providing atom-economical access to alkyl amines and enamines.
We develop C–H amination routes that directly convert unactivated C–H bonds into C–N bonds, bypassing pre-functionalization and shortening synthetic sequences by one to three steps.
BOC Sciences employs electrophilic amination reagents to deliver amine groups to carbon nucleophiles — reversing polarity logic and enabling C–N bond formation where nucleophilic amination is disfavored.
Our biocatalytic amination platform uses transaminases, imine reductases, and amine dehydrogenases to produce chiral amines with high enantioselectivity under mild aqueous conditions.
BOC Sciences helps research teams move from target amine structure and substrate assessment to route selection, reaction optimization, synthesis, purification, and analytical confirmation — delivering application-ready amine products.
Share your target amine structure, starting material, preferred amination route, scale requirement, stereochemical needs, and analytical specifications. Our specialists will design a project-specific plan covering route selection, reaction condition optimization, catalyst screening, synthesis, purification, and full characterization.
When established amination protocols fail on your substrate — poor conversion, side-product formation, or catalyst incompatibility — BOC Sciences designs and optimizes a custom reaction method from the ground up.
BOC Sciences synthesizes target amines — from milligram quantities for early discovery to multi-kilogram batches for advanced development — using the most appropriate amination route for your molecule.
We install amine groups onto advanced intermediates and drug-like scaffolds without deconstructing the molecular framework — preserving existing stereocenters and sensitive functional groups.
BOC Sciences translates discovery-scale amination reactions into robust, reproducible processes suitable for larger-scale production with defined critical process parameters.
Amine groups are among the most prevalent and functionally versatile structural motifs in pharmaceutical compounds. BOC Sciences supports drug discovery programs by applying strategic amination chemistry to achieve the following molecular design objectives:
Protonated amines at physiological pH form strong electrostatic interactions with aspartate, glutamate, and phosphate residues in protein binding pockets. Conformationally constrained amines — including spirocyclic and bicyclic scaffolds — further sharpen target selectivity by reducing the entropic cost of binding. Our team supports amine scaffold design with chiral synthesis capabilities to deliver single-enantiomer products for structure-activity relationship studies.
The basicity of an amine — shaped by its electronic environment, substitution pattern, and neighboring groups — directly influences aqueous solubility, logD, and passive membrane permeability. We prepare amine analogs with graduated pKa values, helping clients find the right balance between solubility and permeability without altering the core pharmacophore. When needed, we also support solubility improvement through salt screening and co-solvent evaluation.
Installing diverse amine substituents at a single molecular position rapidly generates focused compound libraries for structure-activity relationship analysis. BOC Sciences supports SAR campaigns by performing parallel amination of a common intermediate with structurally diverse amine partners, delivering the resulting library with LC-MS purity data and NMR confirmation. This workflow integrates medicinal chemistry principles directly into the amination process.
Primary and secondary amines serve as convenient attachment points for prodrug moieties, PEG chains, biotin tags, and linker-payload constructs in drug conjugate research. BOC Sciences combines amination expertise with bioconjugation and PEGylation capabilities to deliver amine-functionalized intermediates ready for downstream conjugation. We also prepare N-acyl, N-sulfonyl, N-alkyl, and N-protected derivatives as part of integrated amine modification workflows.
BOC Sciences reviews the target amine structure, available starting materials, scale requirement, stereochemical needs, and application context with the client. Our team proposes one or more amination routes — comparing reductive amination, cross-coupling, nucleophilic substitution, or biocatalytic options — and confirms a practical synthetic plan before experimental work begins.
Our chemists perform systematic condition screening — catalyst, ligand, solvent, base, temperature, concentration, and stoichiometry — across 24–96 parallel reactions depending on project complexity. Each condition is evaluated by conversion, selectivity, and impurity profile using LC-MS or GC-MS monitoring, and the top-performing conditions are advanced to preparative scale verification.
The optimized amination protocol is executed at the target scale. Workup procedures — extraction, filtration, distillation, or scavenger-based removal — are tailored to the reaction matrix. Purification by flash chromatography, preparative HPLC, recrystallization, distillation, or chiral separation delivers the amine product at the agreed purity level.
The final amine product is characterized by NMR, LC-MS/HRMS, IR, and chiral HPLC/SFC as appropriate. A comprehensive report — including reaction conditions, characterization data, purity analysis, and recommendations for subsequent batches — accompanies the delivered product for clear review and downstream use.
Send us your target structure, starting material, expected quantity, current reaction data, known impurities, and preferred analytical package. We can define a practical scope covering feasibility assessment, screening, synthesis, purification, characterization, and scale-up support.
Client Needs: A medicinal chemistry team required a secondary amine product via reductive amination of a sterically hindered cyclic ketone with a functionalized benzylamine derivative. Their internal attempts using NaBH(OAc)3 in dichloroethane gave poor conversion after 24 hours, and stronger reducing agents produced significant alcohol byproduct from competing ketone reduction.
Challenges: The ketone substrate contained gem-dimethyl substitution adjacent to the carbonyl, severely restricting imine formation. The benzylamine partner carried an acid-labile Boc-protected aminoethyl side chain, ruling out Brønsted acid catalysts and prolonged heating. The team needed both acceptable conversion and chemoselectivity over competing ketone reduction.
Solution: We screened six reducing agents, four solvents, three temperatures, and Ti(Oi-Pr)4 as a Lewis acid imine promoter across 48 parallel microscale reactions. The selected conditions used NaBH3CN with Ti(Oi-Pr)4 in THF/MeOH at 40 °C, achieving good conversion with minimal alcohol byproduct. The product was purified by flash chromatography and confirmed by 1H, 13C NMR, and LC-MS.
Outcome: The client received the secondary amine product with a full analytical data package, enabling their SAR study to proceed on schedule with sufficient material for biological evaluation.
Client Needs: A fragment-based drug discovery group required a (R)-configured chiral primary amine intermediate derived from a prochiral aryl ketone for a kinase inhibitor program. The ketone substrate contained a pyridine ring known to inhibit several commercial transaminase panels.
Challenges: The pyridyl substituent coordinated to the active-site metal in several ω-transaminase variants, suppressing catalytic activity. Alternative asymmetric hydrogenation routes required high-pressure equipment and a chiral ruthenium catalyst with limited commercial availability, increasing project cost and timeline.
Solution: We screened 14 engineered transaminase variants with isopropylamine as the amine donor and GDH/glucose for cofactor recycling. Two variants from our enzyme panel showed measurable activity with the pyridyl ketone. The lead variant was further optimized by adjusting pH, temperature, and DMSO co-solvent percentage, achieving satisfactory conversion and enantioselectivity. The product was isolated as the HCl salt and characterized by chiral HPLC, 1H and 13C NMR, and HRMS.
Outcome: The client received the (R)-amine HCl salt with excellent enantiomeric excess, enabling fragment elaboration without the cost and timeline of asymmetric hydrogenation route development.
To support an initial feasibility assessment, clients should provide the target structure, available starting materials, desired amination site, required quantity, stereochemical requirements, and preferred analytical data. Existing routes, unsuccessful experiments, previously tested catalysts, and conditions that must be avoided are also useful. BOC Sciences can evaluate substrate reactivity, functional-group compatibility, likely side reactions, and possible synthetic routes before proposing a plan for reaction screening, optimization, purification, and characterization. When complete information is unavailable, the project may begin with literature research, retrosynthetic assessment, and small-scale feasibility experiments.
BOC Sciences supports multiple approaches to C–N bond formation, including reductive amination, nucleophilic substitution amination, Buchwald–Hartwig amination, copper-catalyzed C–N coupling, hydroamination of alkenes and alkynes, direct C–H amination, electrophilic amination, and biocatalytic amination. Method selection is based on substrate electronics, steric effects, functional-group stability, stereochemical requirements, and project scale. When several routes appear feasible, parallel experiments can compare catalysts, ligands, bases, solvents, temperatures, and other influential parameters before a suitable route is selected for further synthesis, optimization, or scale-up assessment.
Yes. Route development can be performed for substrates associated with low conversion, poor chemoselectivity, severe steric hindrance, catalyst deactivation, or functional-group incompatibility. The work may include comparing alternative bond-forming strategies, screening catalysts and ligands, designing protecting-group schemes, adjusting reagent addition, and optimizing solvent, temperature, pressure, or reaction concentration. Asymmetric catalysis and enzyme-mediated routes may also be evaluated for chiral amine targets. Feasibility ultimately depends on experimental results. If direct amination is unsuitable, stepwise functional-group conversion or an alternative synthetic sequence may be considered to establish a more practical route.
Amination services can address different project stages, from small-scale feasibility screening and laboratory sample preparation to process development and larger-scale material supply. Early experiments generally focus on confirming route feasibility, selecting catalysts, and identifying critical reaction parameters. After a suitable condition is established, further work may evaluate mixing, heat transfer, reagent addition, reaction concentration, workup, and purification. The practical scale is assessed according to substrate properties, reaction hazards, equipment requirements, raw-material availability, and isolation difficulty. High-pressure, high-temperature, or strongly exothermic reactions may require additional safety and scale-up evaluation before an execution plan is defined.
Purification is planned according to the product’s basicity, polarity, stability, salt form, and impurity profile. Available approaches may include extraction, crystallization, salt formation, recrystallization, flash chromatography, preparative chromatography, or a combination of techniques. Analytical methods are selected according to project requirements and may include NMR, LC-MS, HRMS, HPLC, GC, chiral analysis, elemental analysis, or residual-metal testing. Enantiomeric composition may be assessed for chiral amines, while metal-catalyzed reactions can be evaluated for catalyst residues when relevant. The final analytical package and report format are agreed upon according to the intended research use and client specifications.
BOC Sciences quickly screened multiple catalyst systems and identified an effective Buchwald–Hartwig condition for our challenging heteroaryl chloride substrate. Their systematic approach — testing ligand, base, and solvent combinations in parallel — found a working protocol within two weeks, saving our internal team considerable time.
— A Senior Scientist, Medicinal Chemistry
We transferred a reductive amination route to BOC Sciences for scale-up from gram to multi-kilogram quantities. Their team evaluated thermal safety, optimized the workup to eliminate chromatography, and delivered consistent batch quality across three production campaigns. The process documentation was thorough and easy to follow.
— A Process Chemistry Lead at a Pharmaceutical Company in Japan
The analytical package for our chiral amine project included NMR, HRMS, chiral HPLC with enantiomeric excess data, and residual palladium analysis by ICP-MS. Having all characterization data in one report made it straightforward to assess product quality and proceed with our biological assays.
— Dr. Kowalski, Principal Investigator, Drug Discovery
BOC Sciences provided clear updates at each stage — route selection, condition screening, scale-up, and characterization — with LC-MS traces and NMR spectra shared as data became available. The transparent workflow allowed us to make informed decisions at each milestone without delay.
— Dr. Okafor, Associate Director, Chemical Development
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