Palladium-catalyzed tandem oxidative cyclization of 1-bromohexa-1,5-dien-3-ols: easy access to cyclopentenones
作者:Sajal Kanti Mal、Devalina Ray、Jayanta K. Ray
DOI:10.1016/j.tetlet.2003.10.180
日期:2004.1
The novel Pd-catalyzed tandem cyclization of 1-bromohexa-1,5-dien-3-ols, prepared from the corresponding β-bromo-vinylaldehydes to cyclopentenone derivatives has been developed.
Palladium-Catalyzed Novel Cycloisomerization: An Unprecedented Domino Oxidative Cyclization towards Substituted Carbocycles
作者:Jayanta K. Ray、Devalina Ray、Sajal K. Mal
DOI:10.1055/s-2005-872241
日期:——
Efficient Pd-catalyzed cyclization of homoallylated β-bromo-vinylalcohols via a domino process to carbocycle derivatives in presence of different bases is reported. An unexpected and novel palladium-mediated Heck-type intramolecular oxidative cyclization of 1-bromohexa-1-ene-5-yn-3-ol derivatives is also described.
Novel and Rapid Palladium-Assisted 6π Electrocyclic Reaction Affording 9,10-Dihydrophenanthrene and Its Analogues
作者:Rathin Jana、Indranil Chatterjee、Shubhankar Samanta、Jayanta K. Ray
DOI:10.1021/ol801882t
日期:2008.11.6
A novel methodology for the synthesis of 9,10-dihydrophenanthrene and its analogues has been developed via a palladium-assisted 6 pi electrocyclic reaction followed by formaldehyde elimination.
Palladium-Catalyzed Intramolecular Oxidative Heck Cyclization and Its Application toward a Synthesis of (±)-β-Cuparenone Derivatives Supported by Computational Studies
oxidative cyclization of substituted homoallylic alcohols to form cyclic keto compounds under palladium-catalyzed conditions is described. The reaction has practical applications in the synthesis of sesquiterpenes. The mechanism of cyclization, the key step in the tandemreaction, was analyzed by using density functional theory calculations. A novel and efficient intramolecular oxidative cyclization of substituted