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481858

Sigma-Aldrich

Methyl p-tolyl sulfoxide

97%

Synonym(s):

(±)-Methyl p-toluene sulfoxide, (±)-p-Tolyl methyl sulfoxide, 1-Methanesulfinyl-4-methylbenzene, 1-Methyl-4-(methylsulfinyl)benzene, 4-(Methylsulfinyl)toluene, 4-Methylphenyl methyl sulfoxide, 4-Toluene methyl sulfoxide, Methyl 4-methylphenyl sulfoxide, p-Methylphenyl methyl sulfoxide, p-Tolyl methyl sulfoxide

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About This Item

Linear Formula:
CH3C6H4S(O)CH3
CAS Number:
934-72-5
Molecular Weight:
154.23
MDL number:
MFCD00075175
UNSPSC Code:
12352100
PubChem Substance ID:
24871787
NACRES:
NA.22

Assay

97%

bp

113-114 °C/2 mmHg (lit.)

mp

44-46 °C (lit.)

SMILES string

Cc1ccc(cc1)S(C)=O

InChI

1S/C8H10OS/c1-7-3-5-8(6-4-7)10(2)9/h3-6H,1-2H3

InChI key

FEVALTJSQBFLEU-UHFFFAOYSA-N

Related Categories

General description

Methyl p-tolyl sulfoxide (MTSO), an alkyl-substituted p-tolyl sulfoxide, is a Lewis base. It behaves as an activator of silicon tetrachloride that is employed in aza-Diels-Alder reaction.

Application

Methyl p-tolyl sulfoxide may be used as a catalyst in the preparation of homoallylic alcohols by the allylation of aldehydes with allyltrichlorosilane. It may be used as a ligand in the synthesis of molybdenum chlorocomplexes.

Caution

Low melting solid

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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’.

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A New Approach to Di-and Tetrasubstituted 2,3-Dihydropyridin-4(1H)-ones through Aza-Diels-Alder Reaction Promoted by Silicon Tetrachloride.
Peduto A, et al.
Synthesis, 4, 0643-0649 (2009)
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Production of reactive oxygen species represents a fundamental innate defense against microbes in a diversity of host organisms. Oxidative stress, amongst others, converts peptidyl and free methionine to a mixture of methionine-S- (Met-S-SO) and methionine-R-sulfoxides (Met-R-SO). To cope with such
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