Selective nitration of aromatic and substituted aromatic composi

Details Selective nitration of aromatic and substituted aromatic composi Selective nitration of aromatic and substituted aromatic composi

1975-05-02

1976-05-18

Sebastian, Leland A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260612D, 260646, C07C 7910, C07C 7912

Patent

active

039578895

ABSTRACT:
This invention relates to an improvement in a process for nitrating an aromatic or substituted aromatic compound e.g., toluene or ortho-xylene, by reacting such aromatic or substituted aromatic in the presence of nitric acid. The improvement for enhancing the rate of nitration as well as the selectivity of nitration at the para-position in this process comprises carrying out the nitration reaction in the presence of at least an effective amount of anhydrous calcium sulfate or soluble anhydrite.

REFERENCES:
patent: 2948759 (1960-08-01), Wright
patent: 3126417 (1964-03-01), Tsang
patent: 3196186 (1965-07-01), Sogn et al.
patent: 3708546 (1973-01-01), Coon et al.

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