Preparation of sulfamyl halides

Details Preparation of sulfamyl halides Preparation of sulfamyl halides

1979-11-26

1981-04-07

Trousof, Natalie

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260543F, 560150, C07C14370

Patent

active

042605601

ABSTRACT:
Sulfamyl halides are prepared by reacting sulfamic acids with halogen in the presence of phosphorus or of a phosphorus trihalide; the sulfamic acid can first be prepared from an isocyanate or urea and then be reacted as above in a one-vessel method.
The compounds obtainable by the process of the invention are valuable starting materials for the preparation of crop protection agents, dyes and drugs.

REFERENCES:
patent: 2888486 (1959-05-01), Gregory
patent: 3621017 (1971-11-01), Zeidler
patent: 3822257 (1974-07-01), Hamprecht
patent: 3849467 (1974-11-01), Mangold
patent: 3870740 (1975-03-01), Fischer
patent: 3872167 (1975-03-01), Hamprecht
patent: 3912489 (1975-10-01), Fischer
patent: 3992444 (1976-11-01), Hamprecht
patent: 3997531 (1976-12-01), Fischer
patent: 4014931 (1977-03-01), Hamprecht
patent: 4096181 (1978-06-01), Hamprecht
patent: 4097521 (1978-06-01), Merkle
patent: 4101571 (1978-07-01), Koenig
patent: 4104298 (1978-08-01), Koenig

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