6617-78-3Relevant articles and documents
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
Fesenko, Anastasia A.,Shutalev, Anatoly D.
, (2020/09/04)
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
A one-pot synthesis of 5,5-disubstituted hydantoin derivatives using magnetic Fe3O4 nanoparticles as a reusable heterogeneous catalyst
Safari, Javad,Javadian, Leila
, p. 1165 - 1171 (2013/12/04)
A facile and rapid method for the one-pot synthesis of 5,5-disubstituted hydantoins in the presence of magnetic Fe3O4 nanoparticles has been developed. The multicomponent reactions of carbonyl compounds (aldehydes and ketones), potassium cyanide and ammonium carbonate were carried out under solvent-free conditions to obtain various hydantoin derivatives. The magnetic catalyst could be readily separated by an external magnet from the reaction mixture. This procedure has many advantages, such as the use of a reusable magnetic catalyst, high yields, short reaction times, simplicity and very easiness with implementing the methodology.
Ruthenium catalyzed hydroaminoalkylation of isoprene via transfer hydrogenation: Byproduct-free prenylation of hydantoins
Schmitt, Daniel C.,Lee, Jungyong,Dechert-Schmitt, Anne-Marie R.,Yamaguchi, Eiji,Krische, Michael J.
supporting information, p. 6096 - 6098 (2013/07/11)
The ruthenium catalyst derived from Ru3(CO)12 and triphos [Ph2P(CH2CH2PPh2) 2] promotes the direct C-C coupling of isoprene with aryl substituted hydantoins 1a-1f at the diene C4-position to furnish products of n-prenylation 2a-2f. A mechanism involving hydantoin dehydrogenation followed by diene-imine oxidative coupling to furnish a transient aza-ruthencyclopentene is proposed.