69724-53-4Relevant academic research and scientific papers
Catalytic guanylation of aliphatic, aromatic, heterocyclic primary and secondary amines using nanocrystalline zinc(II) oxide
Kantam, M. Lakshmi,Priyadarshini,Amal Joseph,Srinivas,Vinu,Klabunde,Nishina, Yuta
experimental part, p. 5730 - 5737 (2012/09/08)
Nanocrystalline ZnO was found to be a highly efficient heterogeneous catalyst for the guanylation of amines with various carbodiimides to afford N,N′,N″-trisubstituted guanidines in excellent yields. Structurally divergent aliphatic, aromatic, heterocyclic primary and secondary amines were converted to the corresponding N,N′,N″-trisubstituted guanidines using optimal conditions. The catalyst was easy to handle even under atmospheric conditions and can be easily recovered by centrifugation and reused for five cycles with consistent activity.
Titanacarborane mediated C-N bond forming/breaking reactions
Shen, Hao,Xie, Zuowei
scheme or table, p. 1652 - 1657 (2009/10/11)
Constrained-geometry titanacarboranes [σ:η1:η5-(OCH2)(R2NCH2)C2B9H9]Ti(NR2) (R = Me, Et) are synthesized via an unexpected reaction of [Me3NH][μ-7,8-CH2OCH2-7,8-C2B9H10] with Ti(NR2)4 (R = Me, Et), involving a C-O bond cleavage and C-N bond formation. These complexes can be readily converted to new amide species or alkoxide by reacting with amines or esters, respectively. Insertion of a series of unsaturated molecules into the Ti-N bond of the aforementioned complexes results in the formation of various half-sandwich titanacarboranes. [σ:η1:η5-(OCH2)(Me2NCH2)C2B9H9]Ti(NMe2) is also able to efficiently catalyze the hydroamination of carbodiimides and the transamination of guanidines. These results are summarized in this brief account.
