P-TOLUENESULFINIC ACID

Product NameP-TOLUENESULFINIC ACID
CAS536-57-2
MFC7H8O2S
MW156.2
EINECS208-638-3
MOL File536-57-2.mol

Chemical Properties

Melting point	85°
Boiling point	250.45°C (rough estimate)
Density	1.2474 (rough estimate)
refractive index	1.5248 (estimate)
storage temp.	Inert atmosphere,Store in freezer, under -20°C
pka	pK1:1.7 (25°C)
EPA Substance Registry System	Benzenesulfinic acid, 4-methyl- (536-57-2)

Safety Information

RTECS

GZ7260000

Usage And Synthesis

Uses

p-toluenesulfinic acid is used in preparation of alkyl, vinyl, and allyl sulfones; starting material for the preparation of chiral sulfoxides; mild acid catalyst.

Synthesis Reference(s)

Chemical and Pharmaceutical Bulletin, 35, p. 1770, 1987 DOI: 10.1248/cpb.35.1770

Synthesis

p-toluenesulfinic acid is prepared by isolation of the free acid via acidification of an aqueous solution of the sodium salt has been described; partial conversion to p-Toluenesulfonic Acid frequently accompanies drying of the free acid.

storage

It should be stored in a cool, dry place away from strong oxidizing agents.

Preparation Products And Raw materials

Raw materials

S-METHYL 4-METHYLBENZENETHIOSULFONATE Bicyclo[2.2.1]heptane, 7,7-dimethoxy-4-Iodotoluene P-TOLUENESULFONIC ACID N-HEXYL ESTER BENZYL 4-TOLUENESULFONATE Sodium p-toluenesulfinate N-METHYLPHENETHYLAMINE METHYL P-TOLUENESULFINATE 1-Hexanol Toluene Tosyl chloride 4-Fluorobenzaldehyde p-Toluenethiol N'-(9H-Fluoren-9-ylidene)-4-methylbenzenesulfonohydrazide Benzene, 1,1'-[1,2-ethanediylbis(sulfonyl)]bis[4-methyl-9H-Fluoren-9-imine