Preparation of sulphoalkyl quaternary salts

Details Preparation of sulphoalkyl quaternary salts Preparation of sulphoalkyl quaternary salts

1978-06-05

1981-09-01

Daus, Donald G.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548100, 548169, 548179, 548186, 548203, 548221, 548217, 548229, 548230, 548235, 548329, 548333, 548337, 548341, 26032612R, 2603265S, 2603269, 542473, C07D29312, C07D27762, C07D26354, C07D23504

Patent

active

042873487

ABSTRACT:
Sulphoalkyl quaternary salts of the formula ##STR1## wherein X is --O--, --Se--, --S--, --NR-- or --CR(R)--, R is hydrogen or alkyl, R.sub.1 is hydrogen, methyl or ethyl, R.sub.2 and R.sub.3 are each hydrogen or substituents or together represent the atoms necessary to complete an optionally substituted benzene ring, R.sub.4 is optionally substituted alkylene of 3 or 4 carbon atoms and n is 1 or 0, except that when n is 1, R.sub.1 cannot be hydrogen, are prepared by heating at a temperature above 80.degree. C. a heterocyclic base of the formula ##STR2## wherein X, R.sub.1, R.sub.2, R.sub.3 and n have the indicated meanings with a hydroxysulphonic acid of the formula HOR.sub.4 SO.sub.3 H.

REFERENCES:
patent: 2503776 (1950-04-01), Sprague
patent: 3177210 (1965-04-01), Rosenoff
patent: 3274204 (1966-09-01), Klass et al.
patent: 3882120 (1975-05-01), Piesch et al.

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