- Two-step α-ureidoalkylation of ureas with 4,5-dihydroxyimidazolidin- 2-ones
-
Two-step α-ureidoalkylation of ureas with various 4,5-dihydroxyimidazolidin-2-ones gave novel 1,3-dialkyl-4,5-bis(3-alkylureido)-, 1,3-dialkyl-4,5-bis[3-(2-pyrimidyl)ureido]-, or 1,3-dialkyl-4,5-bis(3,3- dialkylureido)imidazolidin-2-ones and ensembles of three imidazolidine rings. The structure of 4,5-bis(2-oxoimidazolidin-1-yl)imidazolidin-2-one was confirmed by X-ray diffraction data. Springer Science+Business Media, Inc. 2007.
- Kravchenko,Gazieva,Sigachev,Maksareva,Lyssenko,Makhova
-
-
Read Online
- Cyclization of 1,3-dialkyl-4,5-bis(1-thiosemicarbazido)-imidazolidin-2- ones(thiones) with aromatic aldehydes
-
Cyclization of 1,3-dialkyl-4,5-bis(1-thiosemicarbazido)imidazolidin-2- ones(thiones) with aromatic aldehydes under acidic catalysis affords 1,3-dialkyl-4-(arylideneamino)-5-thioxohexahydroimidazo[4,5-d]imidazol-2(1H) -ones and 5,7-dialkyltetrahydro-1H-imidazo[4,5-e]-1,2,4-triazine-3,6(2H,4H)- dithiones.
- Gazieva, Galina A.,Vasilevskii, Sergei V.,Belyakov, Pavel A.,Nelyubina, Yulia V.,Lubuzh, Elena D.,Kravchenko, Angelina N.
-
scheme or table
p. 285 - 287
(2011/05/15)
-
- 4,5-Dihydroxyimidazolidin-2-ones in the α-ureidoalkylation reaction of N-(carboxyalkyl)-, N-(hydroxyalkyl)-, and N-(aminoalkyl)ureas 1. α-Ureidoalkylation of N-(carboxyalkyl)ureas
-
The α-ureidoalkylation of N-(carboxyalkyl)ureas (ureido acids) with 1,3-H2 s-, 1,3-Me 2 s-, and 1,3-Et2 s-4,5-dihydroxyimidazolidin-2-ones was systematically studied. The yields of glycolur
- Kravchenko,Lyssenko,Chikunov,Belyakov,Il'In,Baranov,Nelyubina,Davankov,Pivina,Makhova,Antipin
-
experimental part
p. 395 - 405
(2010/07/08)
-