Process for making carbohydrazide

Details Process for making carbohydrazide Process for making carbohydrazide

1982-08-17

1985-01-29

Waltz, Thomas A.

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

Organic compounds

Amino nitrogen containing

564 18, C07C13302

Patent

active

044967616

ABSTRACT:
Disclosed is a process for making carbohydrazide by reacting a di(lower alkyl) carbonate with hydrazine in two-stages with an intermediate step of removing the corresponding lower alkanol formed as a co-product in the first stage. The two reaction stages are carried out at relatively low temperatures (i.e. below about 80.degree. C.).

REFERENCES:
patent: 4269717 (1981-05-01), Slovinsky
Byrkit et al., "Hydrazine in Organic Chemistry", Ind. Eng. Chem., vol. 4, pp. 1862-1875, (1950).
Audrieth et al., "Preparation and Properties of Thiocarbohydrazide", J. Org. Chem. 19, 733-748, (1954).
Curtius et al., Chem. Ber., 27, 55, (1894).
F. Kurzer and M. Wilkinson, "The Chemistry of Carbohydrazide and Thiocarbohydrazide", Chemical Reviews, vol. 70, American Chemical Society, pp. 111-149, (1970).
E. Mohr, J. Brezinski and L. Audrieth, "Carbohydrazide", Inorganic Synthesis, vol. IV, pp. 32-35, (1953).

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