Skip to Content
Merck
All Photos(1)

Documents

235253

Sigma-Aldrich

(Diethylamino)sulfur trifluoride

95%

Synonym(s):

DAST, Diethylaminosulfur trifluoride

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

Linear Formula:
(C2H5)2NSF3
CAS Number:
38078-09-0
Molecular Weight:
161.19
Beilstein:
1849066
EC Number:
253-771-2
MDL number:
MFCD00000363
UNSPSC Code:
12352101
PubChem Substance ID:
24854092
NACRES:
NA.22

Assay

95%

form

liquid

bp

30-32 °C/3 mmHg (lit.)

density

1.22 g/mL at 25 °C (lit.)

storage temp.

2-8°C

SMILES string

CCN(CC)S(F)(F)F

InChI

1S/C4H10F3NS/c1-3-8(4-2)9(5,6)7/h3-4H2,1-2H3

InChI key

CSJLBAMHHLJAAS-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

General description

Diethylamino sulfur trifluoride (DAST) is a fluorinating reagent used in the synthesis of fluorinated compounds and ring-opening reactions.

Application

  • Fluorinating agent: reaction with alcohols and carbonyl compounds, Review
  • Review on nucleophilic fluorination.
  • Catalyst for Friedel-Crafts allylation using tertiary cyclopropyl silyl ethers and the rearrangement of homoallylic alcohols to unsaturated aldehydes.
  • Early introduction of a fluoromethyl group stabilizes the epoxide during further manipulations in the synthesis of 26-fluoro-epothilone.
  • Fluorinating agent for a variety of compounds, including thioethers, alkenols, and cyanohydrins.
  • Reagent for gem difluorination of ketopipecolinic acids.

replaced by

Product No.
Description
Pricing

719439

XtalFluor-E®

719447

XtalFluor-M®

Pictograms

FlameCorrosion
GHS02,GHS05

Signal Word

Danger

Hazard Statements

H226,H242,H314

Hazard Classifications

Eye Dam. 1 - Flam. Liq. 3 - Self-react. D - Skin Corr. 1A

Supplementary Hazards

EUH014

Storage Class Code

5.2 - Organic peroxides and self-reacting hazardous materials

WGK

WGK 3

Flash Point(F)

73.4 °F

Flash Point(C)

23 °C

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

S De Jonghe et al.
Bioorganic & medicinal chemistry letters, 9(21), 3159-3164 (1999-11-24)
Short-chain 3-fluoro-(dihydro)ceramide analogues are synthesized from L-serine using diethylaminosulfur trifluoride (DAST) as fluorinating agent. The apoptogenic activity of these compounds was measured in three different cell lines and compared with their hydroxylated counterparts.
Fluorination with diethylaminosulfur trifluoride and related aminofluorosulfuranes
M. Hudlicky
Org. React., 35, 513-513 (1988)
Stereoselective introduction of a trifluoromethyl group into an unsaturated system
Tellier, F.; Sauvetre, R.
Tetrahedron Letters, 32, 5963-5963 (1991)
Recent advances in nucleophilic fluorination reactions of organic compounds using Deoxofluor and DAST
RP Singh, et al.
Synthesis, 2002, 2561-2578 (2002)
M Kirihara et al.
Chemical & pharmaceutical bulletin, 48(2), 220-222 (2000-03-08)
Diethylaminosulfur trifluoride reacted with cyclic ketoximes bearing substituent(s) that can stabilize a carbocation to cause fluorinative fragmentation, affording fluorinated carbonitrile. Ketoximes lacking such substituents afforded complex mixtures. However, the introduction of a sulfur functionality, which can stabilize a carbocation and
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service