Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing
Patent
1989-11-17
1991-08-20
Hollrah, Glennon H.
Organic compounds -- part of the class 532-570 series
Organic compounds
Amino nitrogen containing
2604045, C07C32742, C07C32744
Patent
active
050416545
ABSTRACT:
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.
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Furlong Jacqueline M.
Lokken Robert J.
Mader Roger A.
Olson David B.
Hollrah Glennon H.
Minnesota Mining and Manufacturing Company
O'Sullivan Peter G.
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