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Phenyl sulfur pentafluoride, with the chemical formula C6H5SF5, is a sulfur-containing aromatic compound characterized by its colorless appearance, water-insolubility, and pungent odor. Highly reactive due to the presence of electronegative fluorine atoms, it serves as a crucial reagent in organic synthesis. Its properties make it a versatile chemical for various applications, particularly in the synthesis of pharmaceuticals, agrochemicals, and specialty chemicals, as well as a fluorinating agent in organic chemistry reactions. However, its corrosive and toxic nature necessitates careful handling.

2557-81-5

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2557-81-5 Usage

Uses

Used in Pharmaceutical Synthesis:
Phenyl sulfur pentafluoride is used as a reagent in the synthesis of pharmaceuticals for its ability to facilitate the formation of complex organic molecules, contributing to the development of new drugs and therapeutic agents.
Used in Agrochemical Production:
In the agrochemical industry, Phenyl sulfur pentafluoride is utilized as a reagent in the synthesis of various agrochemicals, aiding in the creation of compounds that protect crops and enhance agricultural productivity.
Used in Specialty Chemicals Manufacturing:
Phenyl sulfur pentafluoride is employed as a reagent in the production of specialty chemicals, where its unique properties allow for the synthesis of compounds with specific characteristics required for niche applications.
Used as a Fluorinating Agent in Organic Chemistry:
Phenyl sulfur pentafluoride serves as a fluorinating agent in organic chemistry reactions, enabling the introduction of fluorine atoms into organic molecules, which can significantly alter their chemical and physical properties for various applications.

Check Digit Verification of cas no

The CAS Registry Mumber 2557-81-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,5,5 and 7 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 2557-81:
(6*2)+(5*5)+(4*5)+(3*7)+(2*8)+(1*1)=95
95 % 10 = 5
So 2557-81-5 is a valid CAS Registry Number.
InChI:InChI=1/C6H5F5S/c7-12(8,9,10,11)6-4-2-1-3-5-6/h1-5H

2557-81-5 Well-known Company Product Price

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  • TCI America

  • (P1969)  Phenylsulfur Pentafluoride  >98.0%(GC)

  • 2557-81-5

  • 1g

  • 815.00CNY

  • Detail

2557-81-5SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 14, 2017

Revision Date: Aug 14, 2017

1.Identification

1.1 GHS Product identifier

Product name pentafluoro(phenyl)-λ<sup>6</sup>-sulfane

1.2 Other means of identification

Product number -
Other names Pentafluorothiobenzene

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:2557-81-5 SDS

2557-81-5Relevant academic research and scientific papers

Enhanced preparation of aryl and heteryl sulfur pentafluorides using mercury (II) oxide - hydrogen fluoride media as a fluorinating reagent

Fetyukhin, Volodymyr N.,Guzyr, Olexandr I.,Kozel, Volodymyr N.,Rozhenko, Olexandr B.,Rusanov, Eduard B.,Shermolovich, Yuriy G.

, (2020/09/18)

We developed enhanced method for low temperature and good yield preparation of aryl and heteryl sulfur pentafluorides from chlorotetrafluorides using mercury oxide - hydrogen fluoride and mercury oxide - pyridinium poly(hydrogen fluoride) media as the fluorinating reagents.

Improved Access to Organo-Soluble Di- and Tetrafluoridochlorate(I)/(III) Salts

Kaupp, M.,Müller, R.,Pr?hm, P.,Riedel, S.,Schattenberg, C. J.,Schmid, J. R.,Sonnenberg, K.,Steinhauer, S.,Vo?nacker, P.

supporting information, p. 16002 - 16006 (2020/07/20)

A facile one-pot gram-scale synthesis of tetraalkylammonium tetrafluoridochlorate(III) [cat][ClF4] ([cat]=[NEt3Me]+, [NEt4]+) is described. An acetonitrile solution of the corresponding alkylammonium chloride salt is fluorinated with diluted fluorine at low temperatures. The reaction proceeds via the [ClF2]? anion which is structurally characterized for the first time. The potential application of [ClF4]? salts as fluorinating agents is evaluated by the reaction with diphenyl disulfide, Ph2S2, to pentafluorosulfanyl benzene, PhSF5. The CN moieties in acetonitrile and [B(CN)4]? are transferred in CF3 groups. Exposure of carbon monoxide, CO, leads to the formation of carbonyl fluoride, COF2, and elemental gold is dissolved under the formation of tetrafluoridoaurate [AuF4]?.

Synthesis of 4-(pentafluorosulfanyl)benzenediazonium tetrafluoroborate and analogs and their application for the preparation of SF5-aromatics

-

Page/Page column 16; 31, (2016/02/05)

4-(pentafluorosulfanyl)benzenediazonium tetrafluoroborate salt was synthesized and isolated. The pentafluorosulfanyl salt was examined in a wide assortment of reactions to form novel SF5-bearing alkenes, alkynes, and biaryl derivatives using Heck-Matsuda, Sonogashira, and Suzuki coupling protocols. Dediazoniation of the salt furnished the corresponding p-SF5—C6H4X,C6H4OS(O)(CF3)═NSO2CF3, and p-SF5—C6H4-NTf2 derivatives. The azide derivative p-SF5—C6H4N3 entered into click chemistry with phenylacetylenes to furnish the corresponding triazoles. Various SF5-bearing alkenes were synthesized by coupling reactions using a metal catalyst. Fluorodediazoniation selectively furnished the fluoro derivative p-SF5—C6H4F. Homolytic dediazoniation gave the unsymmetrical biaryls, thus demonstrating the broad utility of pentafluorosulfanyl diazonium salts as building blocks of SF5-aromatics that are in high demand in many branches of chemistry including biomedicine and materials chemistry.

Pyridine-promoted dediazoniation of aryldiazonium tetrafluoroborates: Application to the synthesis of SF5-substituted phenylboronic esters and iodobenzenes

Iakobson, George,Du, Junyi,Slawin, Alexandra M. Z.,Beier, Petr

, p. 1494 - 1502 (2016/04/09)

Pyridine promotes dediazoniation of aryldiazonium tetrafluoroborates. The formed aryl radicals were trapped with B2pin2, iodine, or tetrahydrofuran to afford boronic esters, iodobenzenes and benzenes, respectively. The application to the synthesis of (pentafluorosulfanyl) phenylboronic esters, iodo(pentafluorosulfanyl)benzenes and (pentafluorosulfanyl)benzene is shown.

An improved method for the fluorination of arylsulfur chlorotetrafluorides to arylsulfur pentafluorides

Lummer, Katrin,Ponomarenko, Maxim V.,R?schenthaler, Gerd-Volker,Bremer, Matthias,Beier, Petr

, p. 79 - 83 (2014/01/06)

A new method for the fluorination of arylsulfur chlorotetrafluorides to arylsulfur pentafluorides is described. The reaction is promoted by hydrogen fluoride generated from potassium hydrogen fluoride and trifluoroacetic acid which also serves as a solvent. The reaction is performed under mild conditions and uses substochiometric amounts of potassium hydrogen fluorides in certain cases. Recovery and reuse of trifluoroacetic acid was successfully demonstrated which makes this method safe, simple to use, and atom- and cost-effective.

4-(Pentafluorosulfanyl)benzenediazonium Tetrafluoroborate: A Versatile Launch Pad for the Synthesis of Aromatic SF5 Compounds via Cross Coupling, Azo Coupling, Homocoupling, Dediazoniation, and Click Chemistry

Okazaki, Takao,Laali, Kenneth K.,Bunge, Scott D.,Adas, Sonya K.

, p. 1630 - 1644 (2014/03/21)

The reagent 4-(pentafluorosulfanyl)benzenediazonium tetrafluoroborate (1) was synthesized and isolated as a stable salt for the first time; its application in a wide assortment of transformations was subsequently investigated. A series of novel SF5-bearing alkenes, alkynes, and biaryl derivatives were synthesized by employing Heck-Matsuda, Sonogashira, and Suzuki coupling protocols. Dediazoniation with TMSX (X = Hal; N3; and CN) and NH4SCN in [BMIM][BF4] as solvent furnished the corresponding p-SF5-C6H4X derivatives. The azide derivative p-SF5-C6H4N3 entered into click chemistry with phenylacetylenes to furnish the corresponding triazoles. The 4,4′-bis(pentafluorosulfanyl)biphenyl was synthesized by homo-coupling using Pd(OAc)2. The corresponding azo compounds were obtained through azo-coupling with reactive aromatic nucleophiles (1,3-dimethoxybenzene, 1,3,5-trimethoxybenzene, 1,2,4-trimethoxybenzene, aniline and phenol). Fluorodediazoniation in [BMIM][PF6] and [BMIM][BF 4] selectively furnished the fluoro derivative p-SF 5-C6H4F. Dediazoniation in [BMIM][NTf 2] gave p-SF5-C6H4OS(O)(CF 3)=NSO2CF3 as the major and p-SF 5-C6H4-NTf2 as the minor products. Homolytic dediazoniation in MeCN/NaI gave the unsymmetrical biaryls p-SF 5-C6H4-Ar (ArH = mesitylene and p-xylene) along with p-SF5-C6H4I. Analysis of the dediazoniation product mixtures indicated that dediazoniation of p-SF 5-C6H4N2+ BF 4- in low nucleophilicity, highly ionizing, solvents (TfOH, TFE, HFIP, TFAH) is mainly heterolytic, while in MeOH it is mainly homolytic. The isodesmic reaction p-SF5-C6H 4+ + R-C6H5 → SF 5-C6H5 + p-R-C6H4 + (with R = NO2, CF3, H) was gauged by DFT at various levels and by PCM. Copyright

4-(Pentafluorosulfanyl)benzenediazonium Tetrafluoroborate: A Versatile Launch Pad for the Synthesis of Aromatic SF5 Compounds via Cross Coupling, Azo Coupling, Homocoupling, Dediazoniation, and Click Chemistry

Okazaki, Takao,Laali, Kenneth K.,Bunge, Scott D.,Adas, Sonya K.

, p. 1630 - 1644 (2015/10/05)

The reagent 4-(pentafluorosulfanyl)benzenediazonium tetrafluoroborate (1) was synthesized and isolated as a stable salt for the first time; its application in a wide assortment of transformations was subsequently investigated. A series of novel SF5-bearing alkenes, alkynes, and biaryl derivatives were synthesized by employing Heck-Matsuda, Sonogashira, and Suzuki coupling protocols. Dediazoniation with TMSX (X = Hal; N3; and CN) and NH4SCN in [BMIM][BF4] as solvent furnished the corresponding p-SF5-C6H4X derivatives. The azide derivative p-SF5-C6H4N3 entered into click chemistry with phenylacetylenes to furnish the corresponding triazoles. The 4,4′-bis(pentafluorosulfanyl)biphenyl was synthesized by homo-coupling using Pd(OAc)2. The corresponding azo compounds were obtained through azo-coupling with reactive aromatic nucleophiles (1,3-dimethoxybenzene, 1,3,5-trimethoxybenzene, 1,2,4-trimethoxybenzene, aniline and phenol). Fluorodediazoniation in [BMIM][PF6] and [BMIM][BF4] selectively furnished the fluoro derivative p-SF5-C6H4F. Dediazoniation in [BMIM][NTf2] gave p-SF5-C6H4OS(O)(CF3)=NSO2CF3 as the major and p-SF5-C6H4-NTf2 as the minor products. Homolytic dediazoniation in MeCN/NaI gave the unsymmetrical biaryls p-SF5-C6H4-Ar (ArH = mesitylene and p-xylene) along with p-SF5-C6H4I. Analysis of the dediazoniation product mixtures indicated that dediazoniation of p-SF5-C6H4N2+ BF4- in low nucleophilicity, highly ionizing, solvents (TfOH, TFE, HFIP, TFAH) is mainly heterolytic, while in MeOH it is mainly homolytic. The isodesmic reaction p-SF5-C6H4+ + R-C6H5 → SF5-C6H5 + p-R-C6H4+ (with R = NO2, CF3, H) was gauged by DFT at various levels and by PCM.

Discovery of practical production processes for arylsulfur pentafluorides and their higher homologues, bis- and tris(sulfur pentafluorides): Beginning of a new era of "super-trifluoromethyl" arene chemistry and its industry

Umemoto, Teruo,Garrick, Lloyd M.,Saito, Norimichi

supporting information; experimental part, p. 461 - 471 (2012/07/01)

Various arylsulfur pentafluorides, ArSF5, have long been desired in both academic and industrial areas, and ArSF5 compounds have attracted considerable interest in many areas such as medicines, agrochemicals, and other new materials, since the highly stable SF5 group is considered a "super-trifluoromethyl group" due to its significantly higher electronegativity and lipophilicity. This article describes the first practical method for the production of various arylsulfur pentafluorides and their higher homologues, bis- and tris(sulfur pentafluorides), from the corresponding diaryl disulfides or aryl thiols. The method consists of two steps: (Step 1) treatment of a diaryl disulfide or an aryl thiol with chlorine in the presence of an alkali metal fluoride, and (step 2) treatment of the resulting arylsulfur chlorotetrafluoride with a fluoride source, such as ZnF2, HF, and Sb(III/V) fluorides. The intermediate arylsulfur chlorotetrafluorides were isolated by distillation or recrystallization and characterized. The aspects of these new reactions are revealed and reaction mechanisms are discussed. As the method offers considerable improvement over previous methods in cost, yield, practicality, applicability, and large-scale production, the new processes described here can be employed as the first practical methods for the economical production of various arylsulfur pentafluorides and their higher homologues, which could then open up a new era of "super-trifluoromethyl" arene chemistry and its applications in many areas.

INDUSTRIAL METHODS FOR PRODUCING ARYLSULFUR PENTAFLUORIDES

-

Page/Page column 25; 27, (2012/09/10)

Industrial methods for producing arylsulfur pentafluorides are disclosed. Methods include reacting arylsulfur halotetrafluoride with hydrogen fluoride in the absence or presence of one or more additives selected from a group of fluoride salts, non-fluoride salts, and unsaturated organic compounds to form arylsulfur pentafluorides.

PROCESSES FOR PREPARING POLY(PENTAFLUOROSULFANYL)AROMATIC COMPOUNDS

-

Page/Page column 36-38, (2010/04/25)

Novel processes for preparing poly(pentafluorosulfanyl)aromatic compounds are disclosed. Processes include reacting an aryl sulfur compound with a halogen and a fluoro salt to form a poly(halotetrafluorosulfanyl)aromatic compound. The poly(halotetrafluoro

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