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Meta Toluene Sulphonic Acid and Related Compounds
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Meta Toluene Sulphonic Acid by C.F.H. Allen is about the various chemical reactions and compounds related to toluene. Excerpt: "Theoretically toluene should yield three isomeric mono sulphonic acids, in which the entering sulfonic acid group occupies the positions ortho, meta, or para to the methyl group. The action of sulphuric acid on toluene was first investigated by Jaworsky, (Ztschr. Chem. 1,272), who described one toluene sulphonic acid as the resulting compound. In 1869 Engelhardt and Latschinoff (Ibid. 617), heated toluene with sulphuric acid and made and studied the potassium salt of the resulting acid. They obtained two forms, and identified them by fusion with caustic potash which converted them into the ortho and para cresols, showing that sulphonation had taken place in the positions ortho and para to the methyl group."
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Meta Toluene Sulphonic Acid and Related Compounds - C. F. H. Allen
C. F. H. Allen
Meta Toluene Sulphonic Acid and Related Compounds
EAN 8596547410669
DigiCat, 2022
Contact: DigiCat@okpublishing.info
Table of Contents
META TOLUENE SULPHONIC ACID and RELATED COMPOUNDS
THEORETICAL DISCUSSION
SULPHONATION OF ORTHO TOLUIDINE
Experiment 1.
Experiment 2.
Experiment 3.
Experiment 4.
SULPHONATION OF PARA TOLUIDINE
DIAZOTIZATION OF ORTHO TOLUIDINE SULPHONIC ACID.
Experiment 1.
Experiment 2.
Experiment 3.
Experiment 4.
Experiment 5.
PHYSICAL PROPERTIES OF THE DIAZO COMPOUND
DECOMPOSITION OF THE DIAZO COMPOUND
(2) With n-Butyl Alcohol alone.
A STUDY OF THE SOLUTION OBTAINED BY THE DECOMPOSITION OF THE DIAZO COMPOUND
CONCLUSION
BIBLIOGRAPHY
META TOLUENE SULPHONIC ACID and RELATED COMPOUNDS
Table of Contents
Theoretically toluene should yield three isomeric mono sulphonic acids, in which the entering sulphonic acid group occupies the positions ortho, meta, or para to the methyl group.
The action of sulphuric acid on toluene was first investigated by Jaworsky, (Ztschr. Chem. 1,272), who described one toluene sulphonic acid as the resulting compound. In 1869 Engelhardt and Latschinoff (Ibid. 617), heated toluene with sulphuric acid and made and studied the potassium salt of the resulting acid. They obtained two forms, and identified them by fusion with caustic potash which converted them into the ortho and para cresols, showing that sulphonation had taken place in the positions ortho and para to the methyl group.
Barth (Ann. chem. (Liebig) 152,91), working similarly but fusing under different conditions which also caused oxidation of the methyl group to a carboxyl group obtained para hydroxy benzoic acid and salicylic acid (ortho hydroxy benzoic acid.) This also proved that the sulphonic acid group had entered in the ortho and para positions.
Anna Wolkow (Ztschr. Chem (1870) 321), confirmed this work but ascribed the meta position to the sulphonic acid that passed into salicylic acid. She also made
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