1133721-69-3Relevant academic research and scientific papers
Access to a novel class of tetracyclic 1,4-benzodiazepin-5-ones starting from α-amino acids by Pd-catalyzed amination/1,3-dipolar cycloaddition as the key steps
Basolo, Luca,Beccalli, Egie M.,Borsini, Elena,Broggini, Gianluigi,Khansaa, Maisaa,Rigamonti, Micol
scheme or table, p. 1694 - 1703 (2010/06/15)
A convenient procedure for the preparation of the novel class of tetracyclic imidazo[2,1-c]pyrazolo[1,5-α][1,4]benzodiazepine-5,8-diones is reported. The protocol uses cheap and easily accessible α-amino acids as chiral-pool starting materials and leads to products in an enantiopure form. An intramolecular palladium-catalyzed amination process to form the imidazole nucleus and an intramolecular 1,3-dipolar cycloaddition reaction to simultaneously achieve the pyrazole and 1,4-diazepine rings are the key steps.
Palladium-catalyzed domino carbopalladation/5-exo-allylic amination of α-amino allenamides: An efficient entry to enantiopure imidazolidinones
Beccalli, Egle M.,Broggini, Gianluigi,Clerici, Francesca,Galli, Simona,Kammerer, Claire,Rigamonti, Micol,Sottocornola, Silvia
supporting information; experimental part, p. 1563 - 1566 (2009/08/07)
Allenamides of α-amino acids were converted into enantiopure 2-vinylimidazolidin-4-ones by a carbopalladation/exo-cyclization process. The products were obtained in 2.5:1-5.5:1 dr, with 94-99% ee. The palladium-catalyzed carbonylative cyclization of the s
