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Sigma-Aldrich

(R)-(+)-Methyl p-tolyl sulfoxide

99%

Synonym(s):

(+)-(R)-Methyl 4-tolyl sulfoxide, (+)-Methyl p-tolyl sulfoxide, (R)-4-Methylphenyl methyl sulfoxide, 1-Methyl-4-[(R)-methylsulfinyl]benzene

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About This Item

Linear Formula:
CH3C6H4S(O)CH3
CAS Number:
1519-39-7
Molecular Weight:
154.23
Beilstein:
2040677
MDL number:
MFCD00151502
UNSPSC Code:
12191600
PubChem Substance ID:
24861180
NACRES:
NA.22

Assay

99%

optical activity

[α]20/D +145°, c = 2 in acetone

optical purity

ee: 99% (HPLC)

mp

73-75 °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/t10-/m1/s1

InChI key

FEVALTJSQBFLEU-SNVBAGLBSA-N

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General description

(R)-(+)-Methyl p-tolyl sulfoxide may be used to prepare (R)-(+)-methyl 3,5-dimethoxy-6-[8-oxo-9-(p-tolylsulfinyl) nonyl] benzoate, an intermediate for (R)-lasiodiplodin synthesis. Its anions undergo addition reaction with nitrones to form optically active a-substituted N-hydroxylamines. (R)-(+)-Methyl p-tolyl sulfoxide also reacts with O-mesitylsulfonylhydroxylamine (MSH) to form (-)-(R)-S-methyl-S-p-tolylsulfoximine.

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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Chemistry of sulfoxides and related compounds. XLIX. Synthesis of optically active sulfoximines from optically active sulfoxides.
Johnson CR, et al.
The Journal of Organic Chemistry, 39(16), 2458-2459 (1974)
Asymmetric synthesis of orsellinic acid type macrolides: The example of lasiodiplodin.
Solladie G, et al.
Tetrahedron Asymmetry, 1(3), 187-198 (1990)
The reaction of nitrones with (R)-(+)-methyl p-tolyl sulfoxide anion; asymmetric synthesis of optically active secondary amines.
Murahashi S-I, et al.
Tetrahedron Letters, 34(16), 2645-2648 (1993)

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