Description
Specifications Table
Product Name – Potassium bis(trimethylsilyl)amide, 0.7M (15 wt.%) solution in toluene, AcroSeal® Quantity/Pack Size – 100ML, 800ML Form – Solution Grade – Reagent Application – Strong base for deprotonation, organic synthesis
Product Overview
Potassium bis(trimethylsilyl)amide (KHMDS) in toluene is a highly reactive, non-nucleophilic strong base widely used in organic synthesis for deprotonation reactions. This 0.7M (15 wt.%) solution offers precise concentration control, ensuring consistent performance in sensitive applications. The AcroSeal® packaging guarantees airtight protection, preserving the reagent’s integrity by minimizing exposure to moisture and oxygen. The toluene solvent enhances solubility while maintaining stability, making it ideal for low-temperature reactions. Its high basicity (pKa ~26) enables efficient deprotonation of weakly acidic compounds, including ketones, esters, and nitriles, without competing nucleophilic side reactions. The reagent’s compatibility with anhydrous conditions further supports its use in air-sensitive processes. Each batch undergoes rigorous purity testing to meet analytical-grade standards, ensuring reproducibility in research and development workflows.
FAQs
1. What is the shelf life of this potassium bis(trimethylsilyl)amide solution?
When stored under nitrogen in the original AcroSeal® container at room temperature, the solution remains stable for up to 24 months from the date of manufacture. Avoid prolonged exposure to air or moisture.
2. Can this reagent be used for enolate formation in aldol reactions?
Yes, the strong basicity and non-nucleophilic nature of potassium bis(trimethylsilyl)amide make it highly effective for generating enolates in aldol condensations, even with sterically hindered substrates.
3. Is this solution compatible with glassware, or should special materials be used?
The toluene-based solution is compatible with standard borosilicate glassware. However, ensure all equipment is thoroughly dried and inert (e.g., under nitrogen) to prevent hydrolysis or decomposition.
4. What precautions should be taken during handling due to its air sensitivity?
Always handle under an inert atmosphere (nitrogen or argon) using airtight syringes or cannula transfer techniques. Store in a desiccator or glove box when not in use to prevent moisture absorption.
5. Are there lower-concentration alternatives available for less demanding applications?
For applications requiring milder conditions, sodium bis(trimethylsilyl)amide (NaHMDS) or lithium diisopropylamide (LDA) may be suitable alternatives, though their reactivity profiles differ.
