139210-07-4Relevant academic research and scientific papers
A facile and efficient carbodiimide-mediated synthesis of dihydroquinazolines via a tandem nucleophilic addition-intramolecular hetero conjugate addition annulation strategy
Saito, Takao,Tsuda, Kensaku,Saito, Yoji
, p. 209 - 212 (1996)
A novel and efficient method is described for the synthesis of dihydroquinazoline derivatives which involves initial addition of a nucleophile (alcohol, amine and thiol) to the carbodiimide cumulenic system followed by intramolecular hetero conjugate addition annulation.
Intramolecular heteroconjugate addition of heterocumulenes to α,β- unsaturated carbonyl compounds promoted by the CS2/TBAF system
Tárraga, Alberto,Molina, Pedro,López, Juan Luis
, p. 4895 - 4899 (2007/10/03)
We describe a new method for the preparation of dihydroquinazoline-2- thione and 4H-3,1-benzothiazine-2-thione derivatives by intramolecular heteroconjugate addition of carbodiimides or isothiocyanates bearing one o- substituted α,β-unsaturated carbonyl f
Tetrabutylammonium fluoride promoted lntramolecular Nucleophilic attack of a carbodimide group on an α,β-unsaturated ester group
Molina,Aller,Lorenzo
, p. 283 - 287 (2007/10/03)
(N-Aryl, N'-aryl/alkyl) carbodiimides bearing an α,βunsaturated ester moiety in the ortho position undergo cyclization in the presence of tetrabutylammonium fluoride under mild conditions to give dihydroquinazoline derivatives in synthetically useful yields.
Conjugated Heterocumulenes. Synthesis of Conjugated Carbodiimides and their Facile Conversion via Intramolecular Cycloaddition into Nitrogen Heterocycles, Quinoline and Pyridoindole (α-Carboline) Derivatives
Saito, Takao,Ohmori, Hiromasa,Furuno, Eiji,Motoki, Shinichi
, p. 22 - 24 (2007/10/02)
A convenient method is described for the synthesis of conjugated carbodiimides and their application to nitrogen heterocycle synthesis via electrocyclisation-intramolecular Diels-Alder reaction.
