146980-89-4Relevant academic research and scientific papers
A convenient preparation of a series of 2-aryl-substituted imidazolidines through diamine transfer reaction
Li, Donghong,Zhang, Yongbin,Xia, Chizhong,Guo, Wei
, p. 1829 - 1836 (2007/10/03)
A series of 2-aryl-substituted imidazolidines were prepared through the simple diamine transfer reactions between 2-alkyl-substituted imidazolidines and aromatic aldehydes under the catalysis of n-butylamine.
A convenient "one-pot" reaction for selective monoalkylation of N,N′-disubstituted ethylenediamines
Salerno, Alejandra,Figueroa, Maria Amalia,Perillo, Isabel A.
, p. 3193 - 3204 (2007/10/03)
A study on the scope of the method to obtain N,N,N′-trisubstituted ethylenediamines III by monoalkylation of N,N′-disubstituted ethylenediamines I through a "one-pot" reaction is presented. It involves condensation of compounds I with aldehydes followed by reduction of the formed imidazolidines II without previous isolation.
Synthesis of substituted 1H-4,5-dihydroimidazolium salts by dehydrogenation of imidazolidines
Salerno, Alejandra,Caterina, Cristina,Perillo, Isabel A.
, p. 3369 - 3382 (2007/10/03)
A study is presented on the scope of the method to obtain 1H-4,5-dihydroimidazolium salts 3 by dehydrogenation of 1,3-di and 1,2,3-trisubstituted imidazolidines 2. Of the dehydrogenating agents used, N-bromoacetamide leads to the best results, providing a
Reduction of Substituted 1H-4,5-Dihydroimidazolium Salts
Salerno, Alejandra,Ceriani, Vanina,Perillo, Isabel A.
, p. 1725 - 1733 (2007/10/02)
Reactions of several substituted 1H-4,5-dihydroimidazolium salts 1 with nucleophilic and electrophilic reducing agents acting via hydride transfer were explored.Reaction of compounds 1 with lithium aluminum hydride in THF afforded the corresponding imidazolidines 2.When alkaline borohydrides (sodium borohydride, potassium borohydride, sodium cyanoborohydride) in ethanol at room temperature were used, partial or total over-reduction of compounds 2 leading to N,N,N'-trisubstituted ethylenediamines took place on occasion.Results may be explained taking into account that reductive cleavage of 2 proceeds via a stabilized iminium ion present in protic solvents.Treatment of compounds 1 with an excess of borane in THF afforded the corresponding imidazolidines 2 or their borane complexes, according to the substituent type.
