Process for the preparation of N-cyanoimidocarbonates

Details Process for the preparation of N-cyanoimidocarbonates Process for the preparation of N-cyanoimidocarbonates

1992-07-15

1993-05-04

Cintins, Marianne M.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

558 9, 549371, C07D31732, C07D31906, C07D24900

Patent

active

052083519

ABSTRACT:
The present invention provides a process for the preparation of N-cyanoimidocarbonates of the general formula: ##STR1## in which R.sup.1 and R.sup.2 are the same and are alkyl radicals containing up to 4 carbon atoms or R.sup.1 and R.sup.2 are joined together to give an ethylene or propylene chain which is optionally substituted by an alkyl radical containing up to 3 carbon atoms, wherein an imidocarbonate obtained in aqueous alkaline solution from the appropriate alcohol and cyanogen chloride is added with an acid to an aqueous solution of cyanamide in such a manner that the reaction mixture has a pH value of from 3 to 8.

REFERENCES:
patent: 4298544 (1981-11-01), Robinson
A. Hantesch & M. Wolvekamp; Justus Liebigs Ann. Chem., 331, 265 (1904).

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