What is a silylation reaction?
Silylation is the introduction of one or more (usually) substituted silyl groups (R3Si) to a molecule. The process is the basis of organosilicon chemistry.
How do you use BSTFA?
Protocol: No Solvent, No Heat 1. Combine 1-10 mg of sample and 0.1-0.5 ml of BSTFA in a clean dry 3 ml Reaction Vial. 2. Cap, mix well, and incubate for 5-10 minutes or until reaction is complete.
What is the function of TMS Cl BSTFA?
BSTFA (N,O-bis(trimethylsilyl)trifluoroacetamide) is the pre- ferred reagent for trimethylsilylation of alcohols, alkaloids, amines and biogenic amines, carboxylic acids, phenols, and steroids. Very versatile.
What is BSTFA?
N,O-Bis(trimethylsilyl)trifluoroacetamide (BSTFA) is a chemical compound that is used to derivatise labile groups such as hydroxyl on other chemicals, with the more stable trimethylsilyl group, which protects the labile group and allows the compound to be used for analytical purposes or as a chemical reagent for …
What is silylation in GC?
Silylation is a common and feasible means of derivatizing highly polar analytes to facilitate GC analysis. Silylating reagents are simple means by which to derivatize a wide range of analytes, most commonly sugars, phenols, weak acids, amines, amides, and thiols.
What derivative is used during silylation?
As silylating agents ASiR1R2R3, silyl chlorides (A = Cl), silyl derivatives of acetic or trifluoroacetic acids or silyl derivatives of some amines and amides are used. In many cases, silyl derivatives are formed in quantitative yield under rather mild conditions.
What is Bstfa derivatization?
BSTFA is a derivatizing agent widely used in the derivatization of estrogenic steroids, thereby resulting in the formation of trimethylsilyl (TMS) derivative. It is also known to react with the aromatic hydroxyl group.
How does derivatization work?
Derivatization is a technique used in chemistry which converts a chemical compound into a product (the reaction’s derivate) of similar chemical structure, called a derivative.
What is BSTFA derivatization?
Why are samples derivatized before analysis in gas chromatography?
The derivatization is typically done to change the analyte properties for a better separation and also for enhancing the method sensitivity. In GC/MS, derivatization may improve the capability of compound identification. Examples illustrating such improvements are included.
How derivatization is done?
The three most widely used methods of derivatization in GC are silylation, acylation, and alkylation. Silylation. In this reaction, active hydrogens are displaced by a silyl group, most often tetramethylsilane (TMS). The general reaction scheme is illustrated for TMS reacting with an alcohol below.
What is derivatization reagent?
Derivatization reagent is the substance that is used to chemically modify a compound to produce a new compound which has properties that are suitable for analysis in GC or LC. The following criteria must be used as guidelines in choosing a suitable derivatization reagent for GC analysis.
What is BSTFA + 1% TMCS silylation?
Ideal for difficult-to-silylate compounds, the Thermo Scientific™ BSTFA + 1% TMCS Silylation Reagent is derivatizing compounds. Need it Now? See alternate available products .
What is an example of a silylation reaction?
A general example of a silylation reaction is shown in reaction 1, using trimethylchlorosilane as the derivatization reagent, which involves a nucleophilic attack upon silicon. The silyl reactions are usually carried out in aprotic solvents such as tetrahydrofuran (THF) or dimethyl sulfoxide (DMSO): Sign in to download full-size image
Are silylation reagents moisture sensitive?
However, it is a general case that silylation reagents are moisture sensitive and care must be taken to maintain inert and water-free environments to prevent deactivation or reduce unwanted side reactions.
Is silylation a KIE reaction?
In principle, the silylation reaction is rapid and quantitative, and this is not accompanied by KIEs (Rieley et al., 1994). Prevalent methods for derivatization of amino acids and monosaccharides use t-BDMS or trimethylsilyl (TMS) derivatives.