Process for the production of 2-amino-5-mercapto-1,3,4-thiadiazo

Details Process for the production of 2-amino-5-mercapto-1,3,4-thiadiazo Process for the production of 2-amino-5-mercapto-1,3,4-thiadiazo

1982-08-13

1985-01-08

Gerstl, Robert

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D28512

Patent

active

044927932

ABSTRACT:
2-Amino-5-mercapto-1,3,4-thiadiazoles can be produced in very high yields from thiosemicarbazides and carbon disulfide in aqueous phase by working in the presence of the corresponding ammonium salt of bis-2,5-mercapto-1,3,4-thiadiazole at a temperature above 40.degree. C. Preferably the process is carried out in the presence of the mother liquor from a previous reaction.

REFERENCES:
Guha, J. Am. Chem. Soc., vol. 44, pp. 1510-1517, (1922).
Chem. Abst. vol. 78, No. 111217f, (1973).
Katritzky et al, Advances in Heterocyclic Chemistry, vol. 9, p. 190, (1968).

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