Different pathways in the reaction of N-(tosylmethyl)-substituted ureas, thioureas, and N′-cyanoguanidines with sodium cyanide. Synthesis of α-ureido nitriles, α-ureido amides, and hydantoin imino derivatives
Reaction of N-(tosylmethyl)-substituted ureas, thioureas, and N′-cyanoguanidines, prepared by condensation of the corresponding amides with various aldehydes and p-toluenesulfinic acid, with NaCN has been studied. The outcome of the reaction is strongly d
Fesenko, Anastasia A.,Shutalev, Anatoly D.
(2020/09/04)
PROCESS FOR THE PREPARATION OF ISOBUTYLIDENE DIUREA
The invention relates to a process comprising: reacting isobutyraldehyde with an aqueous solution of urea in the presence of a phase transfer catalyst to form isobutylidene diurea. Preferably, the phase transfer catalyst is a quaternary ammonium salt, mor
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Paragraph 0053-0057
(2014/02/16)
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