Sulfamic acid halides and processes for the preparation of sulfa

Details Sulfamic acid halides and processes for the preparation of sulfa Sulfamic acid halides and processes for the preparation of sulfa

1979-06-25

1982-04-27

Ford, John M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260455R, 260543R, 260543F, 260948, 560125, 560149, 560115, 560145, 560148, C07C15502, C07C 7944, C07C14312, C07C12506

Patent

active

043270344

ABSTRACT:
Sulfamic acid halides and processes for the preparation of sulfamic acid halides by reaction of monosubstituted sulfamic acid halides with halogen compounds in the presence of specific amounts of a basic compound and in the presence of an organic solvent, if desired with subsequent treatment with water at a pH of at most 7. The compounds obtainable by the process of the invention, some of which are new, are valuable starting materials for the preparation of crop protection agents, dyes and drugs.

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patent: 4131620 (1978-12-01), Hamprecht
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Acta Chem. Scand., 17, (1963), p. 2142.
Ann., 729, (1969), p. 44.
Angew. Chemie, 89, (1977), pp. 789-796.
Conant, The Chemistry of Organic Compounds, MacMillan Company, New York, 1939.
Atkins et al., J. Amer. Chem. Soc., 89, (1967), p. 2503.
Bartholomew et al., J. Chem. Research, 1977, pp. 2813-2825.

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