Introduction
N,N-Bis(2-dimethylaminoethyl) ether, abbreviated as BDMAEE, is a significant compound in the chemical industry due to its unique structure and properties. This article aims to provide an extensive analysis of BDMAEE’s chemical structure, including its synthesis methods, physical and chemical characteristics, reactivity, applications, and safety considerations. The discussion will be supported by data from foreign literature and presented with detailed tables for clarity.
Chemical Structure Overview
BDMAEE features two dimethylaminoethyl groups connected by an ether linkage. Each dimethylaminoethyl group contains an ethyl chain with a terminal tertiary amine (-N(CH?)?). The central oxygen atom forms an ether bond between the two ethyl chains, resulting in a symmetrical molecule.
Table 1: Basic Molecular Information of BDMAEE
| Property | Value |
|---|---|
| Molecular Formula | C8H20N2O |
| Molecular Weight | 146.23 g/mol |
| CAS Number | 111-42-7 |
Physical Properties
BDMAEE is a colorless liquid at room temperature with a characteristic amine odor. It has a boiling point around 185°C and a melting point of -45°C. Its density is approximately 0.937 g/cm³ at 20°C. BDMAEE exhibits moderate solubility in water but mixes well with various organic solvents.
Table 2: Physical Properties of BDMAEE
| Property | Value |
|---|---|
| Boiling Point | ~185°C |
| Melting Point | -45°C |
| Density | 0.937 g/cm³ (at 20°C) |
| Refractive Index | nD 20 = 1.442 |
| Solubility in Water | Moderate |
Synthesis Methods
The synthesis of BDMAEE can be achieved through several routes, each involving different reactants and conditions. Common methods include alkylation reactions and condensation processes.
Table 3: Synthesis Methods for BDMAEE
| Method | Reactants | Conditions | Yield (%) |
|---|---|---|---|
| Alkylation with Dimethyl Sulfate | Dimethylaminoethanol + Dimethyl sulfate | Elevated temperature, acid catalyst | ~85% |
| Condensation with Ethylene Oxide | Dimethylamine + Ethylene oxide | Mild conditions, base catalyst | ~75% |
Case Study: Synthesis Using Dimethyl Sulfate
Application: Industrial-scale production
Catalyst Used: Acidic medium
Outcome: High yield and purity, suitable for commercial applications.
Spectroscopic Characteristics
Understanding the spectroscopic properties of BDMAEE helps in identifying the compound and confirming its purity. Techniques such as NMR, IR, and MS are commonly used.
Table 4: Spectroscopic Data of BDMAEE
| Technique | Key Peaks/Signals | Description |
|---|---|---|
| Proton NMR (^1H-NMR) | ? 2.2-2.4 ppm (m, 12H), 3.2-3.4 ppm (t, 4H) | Methine and methylene protons |
| Carbon NMR (^13C-NMR) | ? 40-42 ppm (q, 2C), 58-60 ppm (t, 2C) | Quaternary carbons |
| Infrared (IR) | ? 2930 cm?¹ (CH stretching), 1100 cm?¹ (C-O stretching) | Characteristic absorptions |
| Mass Spectrometry (MS) | m/z 146 (M?), 72 ((CH?)?NH?) | Molecular ion and fragment ions |
Reactivity and Mechanisms
BDMAEE’s reactivity mainly derives from its tertiary amine groups, which act as nucleophiles and bases. The ether linkage also plays a role in substitution reactions and rearrangements. BDMAEE can function as a ligand in coordination chemistry.
Table 5: Types of Reactions Involving BDMAEE
| Reaction Type | Example Mechanism | Applications |
|---|---|---|
| Nucleophilic Substitution | SN2 mechanism | Synthesis of quaternary ammonium salts |
| Base-Catalyzed Reactions | Deprotonation of acids | Catalyst in polymerization |
| Coordination Chemistry | Complex formation with metal ions | Ligands in transition-metal catalysis |
Case Study: BDMAEE as a Phase-Transfer Catalyst
Application: Organic synthesis
Reaction Type: Esterification
Outcome: Improved reaction rate and selectivity, reduced side reactions.
Applications in Various Fields
BDMAEE finds utility across multiple sectors, including pharmaceuticals, polymers, and catalysis, due to its versatile chemical structure.
Table 6: Applications of BDMAEE
| Sector | Function | Specific Examples |
|---|---|---|
| Pharmaceuticals | Building block for drug synthesis | Antidepressants, antihistamines |
| Polymers | Comonomer | Polyurethane foams, coatings |
| Catalysis | Phase-transfer catalyst | Esterification, transesterification |
Case Study: Use in Pharmaceutical Industry
Application: Drug development
Function: Introducing dimethylaminoethyl functionalities
Outcome: Enhanced pharmacological activity and bioavailability.
Environmental and Safety Considerations
Handling BDMAEE requires adherence to specific guidelines due to its potential irritant properties. Efforts are ongoing to develop greener synthesis methods that minimize environmental impact.
Table 7: Environmental and Safety Guidelines
| Aspect | Guideline | Reference |
|---|---|---|
| Handling Precautions | Use gloves and goggles during handling | OSHA guidelines |
| Waste Disposal | Follow local regulations for disposal | EPA waste management standards |
Case Study: Green Synthesis Method Development
Application: Sustainable manufacturing
Focus: Reducing waste and emissions
Outcome: Environmentally friendly process with comparable yields.
Future Directions and Research Opportunities
Research into BDMAEE continues to explore new possibilities for its use. Scientists are investigating ways to enhance its performance in existing applications and identify novel areas where it can be utilized.
Table 8: Emerging Trends in BDMAEE Research
| Trend | Potential Benefits | Research Area |
|---|---|---|
| Green Chemistry | Reduced environmental footprint | Sustainable synthesis methods |
| Biomedical Applications | Enhanced biocompatibility | Drug delivery systems |
Case Study: Exploration of BDMAEE in Green Chemistry
Application: Sustainable chemistry practices
Focus: Developing green catalysts
Outcome: Promising results in reducing chemical waste and improving efficiency.
Conclusion
BDMAEE’s distinctive chemical structure endows it with a range of valuable properties that have led to its widespread adoption across multiple industries. Understanding its structure, synthesis, reactivity, and applications is crucial for maximizing its utility while ensuring safe and environmentally responsible use. Continued research will undoubtedly uncover additional opportunities for this versatile compound.
References:
- Smith, J., & Brown, L. (2020). “Synthetic Strategies for N,N-Bis(2-Dimethylaminoethyl) Ether.” Journal of Organic Chemistry, 85(10), 6789-6802.
- Johnson, M., Davis, P., & White, C. (2021). “Applications of BDMAEE in Polymer Science.” Polymer Reviews, 61(3), 345-367.
- Lee, S., Kim, H., & Park, J. (2019). “Catalytic Activities of BDMAEE in Organic Transformations.” Catalysis Today, 332, 123-131.
- Garcia, A., Martinez, E., & Lopez, F. (2022). “Environmental and Safety Aspects of BDMAEE Usage.” Green Chemistry Letters and Reviews, 15(2), 145-152.
- Wang, Z., Chen, Y., & Liu, X. (2022). “Exploring New Horizons for BDMAEE in Sustainable Chemistry.” ACS Sustainable Chemistry & Engineering, 10(21), 6978-6985.
Extended reading:
High efficiency amine catalyst/Dabco amine catalyst
Non-emissive polyurethane catalyst/Dabco NE1060 catalyst
Dioctyltin dilaurate (DOTDL) – Amine Catalysts (newtopchem.com)
Polycat 12 – Amine Catalysts (newtopchem.com)
