Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1976-02-12
1977-12-06
Evans, Joseph E.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
C07C 9900
Patent
active
040616746
ABSTRACT:
Penicillamine or a homolog thereof is obtained by reacting a 2-disubstituted-5,5-alkyl-thiazolidine nitrile, alkyl having 1 to 6 carbon atoms, with a mineral acid in a two-stage proceeding wherein in the first stage relatively low temperatures and a relatively high concentration of the mineral acid are employed while in the second stage the concentration of the acid is relatively low and the temperatures are relatively high, the term "relatively" referring to the relationship of said two stages of the reaction with mineral acid.
REFERENCES:
patent: 3946069 (1976-03-01), Asinger et al.
Asinger Friedrich
Offermanns Heribert
Pfeifer Wolf-Dieter
Scherberich Paul
Schreyer Gerd
Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
Evans Joseph E.
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