1030375-08-6Relevant articles and documents
Thermal [2 + 2]-cycloaddition between silylalkynes and allenylphenols followed by the nucleophilic addition of water: Metal-free and economical synthesis of arylcyclobutenals
Ohno, Shohei,Avena, Ramon Francisco,Aoyama, Hiroshi,Fujioka, Hiromichi,Arisawa, Mitsuhiro
, p. 1220 - 1228 (2020/03/11)
Herein, we report an unprecedented thermal [2 + 2]-cycloaddition between silylalkynes and allenylphenols to form an aromatizing cyclobutachromene intermediate, followed by the nucleophilic addition of water to yield functionalized arylcyclobutenals. This reaction is atom- and pot-economical because all the atoms contained in the starting material are retained in the final product, no other reactants are required, and it proceeds in one-pot.
Intermolecular and intramolecular pauson-khand reactions of functionalized Allenes
Gonzalez-Gomez, Alvaro,Anorbe, Loreto,Poblador, Amalia,Dominguez, Gema,Perez-Castells, Javier
supporting information; experimental part, p. 1370 - 1377 (2009/04/11)
Pauson-Khand reactions of functionalized allenes with different alkynes give cyclopentenones with generally high regio-and stereoselectivities. The allenes react through their external double bonds, giving cyclopentenones with exocyclic double bond at their β positions and predominantly with E stereochemistry. Some intramolecular reactions with allenynes connected through aromatic rings are described. These give the corresponding heterocycles with moderate to good yields. Wiley-VCH Verlag GmbH & Co. KGaA, 2008.
