Process for the preparation of 1,3,4-thiadiazolone derivatives

Details Process for the preparation of 1,3,4-thiadiazolone derivatives Process for the preparation of 1,3,4-thiadiazolone derivatives

1982-02-23

1984-05-15

Lee, Mary C.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

544333, 546144, 546167, 546277, 548141, C07D28512

Patent

active

044489684

ABSTRACT:
A process for preparing 1,3,4-thiadiazolone compounds of the formula ##STR1## comprising reacting a 2-alkoxy-1,3,4-thiadiazole of the formula ##STR2## with hydrogen chloride in non-aqueous organic solvent under non-aqueous conditions at a temperature of from 0.degree. to 100.degree. C.

REFERENCES:
Tomita et al., "Synthesis of Acid Hydrazide Derivatives Containing . . . ", Abstract CA49:11591a (1955).
Lawson et al., "Cyclisation of some thiobenzamido-compounds", J. Chem. Soc. [1957], 1556-1561.
Weidinger, "Synthesen mit Imidsaureestern, II, Syntheses von 1,3,4-Thiodiazulen", Chem. Ber. 96, 1059-1063 (1963).
Akerblom et al., "Synthesis of 2-alkoxy-1,3,4-thiadiazoles", Acta. Chem. Scan. 18, 174-184 (1964).
Japan-Patent Appl. No. 29676/64--Abstract C.A. 66, 85794x (1967).
Clarkson et al., "2-Alkoxy-5-amino- and --5-arenesulphonamido-1,3,4-thiadiazoles . . . ", J. Chem. Soc. [1967], 2700-2704.
Rufenacht, "Zur Chemie von GS 13005, einem neuen insektiziden Phosphorsaureester", Helv. Chim. Acta 51, 518-526 (1968).
Rufenacht, "Arbeiten uber Phosphorsaure-und Thiophosphorsaureester mit . . . ", Helv. Chim. Acta. 55, 1979-1986 (1972).

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