Free tools Windows power users keep installed
One-click scans. No signup required.
Some α-fluoroamines are designed to resist a decomposition pathway that makes many unconstrained examples difficult to handle. Enamine says its bicyclic bridgehead α-fluoroamines are stable as free amines because their geometry disfavors elimination, and that they can be handled routinely and used in amine-specific reactions. That is a supplier claim, not a quantified independent stability result: the sources discussed here do not establish shelf life, storage conditions, or a comparative degradation rate for this series.
The distinction matters for medicinal chemistry. Peer-reviewed work demonstrates ways to synthesize α-fluoroamines, while much of the biological and peptide application literature concerns different compounds—especially α-fluoroalkyl amino acids and β-fluoroamines. Those examples provide useful context, but they do not establish applications for Enamine’s bridgehead building blocks.
What “bench-stable α-fluoroamine” means
An α-fluoroamine has fluorine on the carbon directly attached to nitrogen. The term “bench-stable” is used here for Enamine’s specific constrained, bicyclic bridgehead compounds, not as a general property of all α-fluoroamines. Enamine’s flyer says common unconstrained α-fluoroamines are considered unstable and prone to intramolecular elimination. Its proposed solution is to place fluorine at a bicyclic bridgehead, where the supplier says the geometry and Bredt’s rule disfavor elimination.
According to the flyer, the compounds are stable as free amines, can be handled routinely, and can undergo amine-specific reactions. These are supplier statements. The material cited here does not provide an independent storage study, a shelf-life measurement, defined handling conditions, or a side-by-side stability test against unconstrained α-fluoroamines. “Bench-stable” should therefore be read as a claim about the described supplier series rather than a universal class label or a numerical guarantee.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
Enamine’s flyer, accessed in 2026, advertises “over 10 stable α-fluoroamines from stock on gram scale.” That is catalog language, not confirmation of current inventory or a guarantee that every compound is available. A reader seeking a particular building block should check the supplier’s current listing.
How α-fluoroamines differ from related compounds
Fluorine’s position changes the compound’s identity and makes a difference when interpreting synthesis or biological results. An α-fluoroamine places F on the carbon bonded directly to N; a β-fluoroamine places it one carbon farther away. An α-fluoroalkyl-α-amino acid is a separate amino-acid family, with a fluorinated substituent on the amino acid’s α-carbon. Results for one class should not be transferred to another without evidence.
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
| Material or study | Fluorine position or architecture | What the cited source establishes |
|---|---|---|
| Enamine stable α-fluoroamines | α-fluoroamines on a constrained bicyclic bridgehead | Supplier claim of resistance to elimination, routine handling as free amines, amine-specific reactivity, and more than 10 compounds advertised from stock on gram scale; no independent numerical stability measure is established here. |
| Son, Hwang, Bak, Kim, Choi, and Chung, Organic & Biomolecular Chemistry (2022) | Tetrasubstituted α-fluoroamines | A reported deoxygenative geminal fluorosulfonimidation of 1,2-diketones under mild conditions; the abstract describes a transition-metal-free formal N–F insertion using N-fluorobenzenesulfonimide and a P(III) reagent. |
| “A general, enantioselective synthesis of β- and γ-fluoroamines” (2013) | β- and γ-fluoroamines; a β-fluoroalcohol is the bench-stable intermediate | The authors report 65–77% yields and 87–96% ee for alcohol examples, and 84–96% yields and 90–94% ee for downstream β-fluoroamine examples. The stability description applies to the β-fluoroalcohol intermediate, not α-fluoroamines. |
| Schulte and Lindsley (2011) | Primary β-fluoroamines | The study reports dr >20:1 for its primary β-fluoroamine synthesis, not for an α-fluoroamine series. |
| 2024 review of α-fluoroalkyl-α-amino acids | Fluorinated amino acids and peptide analogues | Reviews effects on hydrophobicity and peptide conformation, and applications including enzyme inhibition, peptide stability, antimicrobial peptides, PET, and 19F NMR probes; these are not demonstrated applications of the bridgehead α-fluoroamines. |
What synthesis evidence is available for α-fluoroamines?
Deoxygenative geminal fluorosulfonimidation
In 2022, Son, Hwang, Bak, Kim, Choi, and Chung reported a route to tetrasubstituted α-fluoroamines from 1,2-diketones. Their paper describes a deoxygenative geminal fluorosulfonimidation under mild conditions: a transition-metal-free formal N–F insertion using N-fluorobenzenesulfonimide and a P(III) reagent. The authors also report computational analysis of the mechanism and selectivity.
This is peer-reviewed synthetic-method evidence for making tetrasubstituted α-fluoroamines. It does not, by itself, establish that the method produces Enamine’s bicyclic bridgehead building blocks, or that the resulting compounds share the supplier’s stability behavior. Those claims would require a structure and route match, which is not established by the cited abstract.
Rank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
Adjacent building-block work
A 2026 short communication reports scalable synthesis of α-fluoroalkyl-substituted cyclopentane building blocks and experimental pKa and LogP evaluation across fluoroalkyl substituents. It offers medicinal-chemistry context on how fluoroalkyl substitution can be evaluated in a building-block setting. The report does not itself establish stability behavior for α-fluoroamines, and no specific pKa or LogP values are given here.
What properties and medicinal-chemistry uses are supported?
For the bridgehead α-fluoroamines, the specific property claim supported here is structural: Enamine attributes resistance to elimination to bridgehead placement in a rigid bicyclic framework. No independent quantitative shelf-life, storage-stability, degradation-rate, or comparative stability statistic is established for that series. Nor does the available material establish a particular biological target, potency, pharmacokinetic effect, or therapeutic use for those building blocks.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
The broader medicinal-chemistry context comes chiefly from α-fluoroalkyl-α-amino acids. A 2024 review describes how fluorinated side chains can modulate hydrophobicity and peptide conformation. It surveys applications in enzyme inhibition, medicinal chemistry, peptide hydrolytic stability, antimicrobial peptides, positron emission tomography (PET), and 19F NMR probes. These examples concern amino acids or peptide analogues; they should not be presented as demonstrated uses of the bridgehead α-fluoroamines.
Separate β-fluoroamine studies also illustrate synthetic utility without answering the same stability question. A 2025 paper reports an iron-catalyzed route to unprotected β-fluoroamines and demonstrates access to LY503430 and radiosynthesis of [18F]KP23. Those examples concern β-fluoroamines, not the bridgehead α-fluoroamine series.
Quick wins for a faster PC:
Clear out junk files and repair common Windows errorsFree Scan →Scan for outdated or missing drivers - takes under a minuteDriver Scan →Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
How to assess a “bench-stable” claim
For a specific compound, distinguish the supplier’s handling claim from evidence that answers a particular experimental need. If long-term storage, a specific solvent or temperature, or compatibility with a planned transformation matters, the general phrase “bench-stable” does not supply those conditions. Check the compound-specific documentation and ask the supplier for handling guidance rather than assuming a shelf life or extrapolating from another fluorinated amine.
- Confirm the position of fluorine. Determine whether the material is α-fluoro, β-fluoro, or an α-fluoroalkyl amino acid; similar names do not mean interchangeable evidence.
- Check the architecture. Enamine’s stability explanation refers to a bicyclic bridgehead design, not every unconstrained α-fluoroamine.
- Separate route evidence from stability evidence. A published synthesis demonstrates access under its reported conditions, but does not automatically establish storage stability or the supplier’s preparation route.
- Match application claims to the tested class. Peptide, imaging, or biological results for fluorinated amino acids or β-fluoroamines do not demonstrate the same result for bridgehead α-fluoroamines.
Evidence limits and practical takeaway
The available evidence supports a focused conclusion: bridgehead placement is Enamine’s stated design strategy for making selected α-fluoroamines more resistant to elimination, and the supplier says these can be handled as free amines and used in amine-specific reactions. A peer-reviewed 2022 route establishes a separate way to synthesize tetrasubstituted α-fluoroamines, while adjacent amino-acid and β-fluoroamine literature supplies context rather than proof of applications for the bridgehead series.
For medicinal chemistry, these compounds are credible specialized building-block candidates when an α-fluorinated amine motif is desired. The available sources do not establish independent shelf-life performance or compound-specific biological value for the supplier’s bridgehead series; those questions must be answered for the particular structure and use.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
