C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/492.1, 260/5
C07C 327/40 (2006.01) B41M 5/132 (2006.01) C07C 327/42 (2006.01)
Patent
CA 2030187
Abstract of the Disclosure This invention relates to the synthesis of N- (monosubstituted)dithiooxamides by the transamination of dithiooxamide. Preferred methods, according to the present invention, take advantage of the discovery that yields of N-(monosubstituted)dithiooxamides can be improved in the Wallach Reaction by: controlling the temperature of the reaction mixture; optimizing the initial concentration of the reactants; adding an effective amount of acid in the quenching or processing procedure; and/or, optionally, adding an effective amount of certain nitrogen bases to the reaction mixture.
Furlong Jacqueline M.
Lokken Robert J.
Mader Roger A.
Olson David B.
Furlong Jacqueline M.
Lokken Robert J.
Mader Roger A.
Minnesota Mining And Manufacturing Company
Olson David B.
LandOfFree
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