99142-63-9Relevant articles and documents
π-Bridge Substitution in DASAs: The Subtle Equilibrium between Photochemical Improvements and Thermal Control**
Martínez-López, David,Santamaría-Aranda, Eduardo,Marazzi, Marco,García-Iriepa, Cristina,Sampedro, Diego
supporting information, p. 4420 - 4429 (2021/02/01)
Donor–acceptor Stenhouse adducts (DASAs) are playing an outstanding role as innovative and versatile photoswitches. Until now, all the efforts have been spent on modifying the donor and acceptor moieties to modulate the absorption energy and improve the c
Lanthanide(III)-Catalyzed Synthesis of trans-Diaminocyclopentenones from Substituted Furfurals and Secondary Amines via a Domino Ring-Opening/4π-Electrocyclization Pathway
Hiscox, Afton,Ribeiro, Kauan,Batey, Robert A.
supporting information, p. 6668 - 6672 (2018/10/24)
A strategy toward the synthesis of trans-4,5-diaminocyclopent-2-enones is described. This core motif is embedded in the marine sponge derived alkaloids agelamadin B and nagelamide J. A variety of 2-substituted trans-4,5-diaminocyclopent-2-enones were synthesized in good to quantitative yields using lanthanide(III) catalysis. The products were formed exclusively as the trans-diastereomers via a mechanism in which the C4-C5 bond formation occurs through a 4π-conrotatory electrocyclization. The precursor 3-substituted furfurals can be readily accessed using palladium(0)-catalyzed cross-coupling between 3-bromofurfural and boronic acids, trifluoroborate salts, or alkynes.
Direct arylation reactions catalyzed by Pd(OH)2/C: Evidence for a soluble palladium catalyst
Parisien, Mathieu,Valette, Damien,Fagnou, Keith
, p. 7578 - 7584 (2007/10/03)
Palladium hydroxide on carbon (Pearlman's catalyst) effectively catalyzes direct arylation reactions of aryl iodides and bromides, providing excellent arylation-to-hydrodehalogenation ratios (>30:1) with broad scope for both intra- and intermolecular arylation processes. Studies aimed at determining the nature of the active catalyst indicate that an active homogeneous palladium species is produced under the reaction conditions.