Scalable, safe, highly efficient and broad-scope PKR in a plug flow reactor.
推流反应器中的可扩展,安全,高效和宽范围的PKR。
Catalyst precursors for the catalytic Pauson-Khand reaction
作者:M.E. Krafft、C. Hirosawa、L.V.R. Bonaga
DOI:10.1016/s0040-4039(99)01959-0
日期:1999.12
Dicobalt hexacarbonyl complexes of enynes serve as Co2(CO)8 surrogates for the intramolecular Pauson-Khand cycloaddition. Enynes with polar functional groups allow for easy separation of the catalyst cyclopentenone by-product (acid or base wash, silica gel plug column) from the desired cyclopentenone.
The catalyticPauson–Khandreaction is favoured in the presence of molecular sieves. This easy protocol probably involves the adsorption of carbon monoxide by the zeolites, making it possible to effect the reaction in the absence of CO atmosphere.
Modification and limitations of the Livinghouse catalytic Pauson-Khand reaction
作者:M.E. Krafft、L.V.R. Bonaga、C. Hirosawa
DOI:10.1016/s0040-4039(99)01960-7
日期:1999.12
The difficult and impractical purification of Co2(CO)8 is not necessary in the catalytic thermal Pauson-Khandreaction previously described by Livinghouse.
Mild and Efficient Molybdenum-Mediated Pauson−Khand-Type Reaction
作者:Javier Adrio、Marta Rodríguez Rivero、Juan Carlos Carretero
DOI:10.1021/ol047678u
日期:2005.2.1
Pauson-Khand reaction promoted by Mo(CO)3(DMF)3 takes place under very mild conditions in the absence of any promoter. High yields in Pauson-Khand adducts are obtained in the cyclization of a wide variety of functionalized 1,6- and 1,7-enynes. Enynes bearing electron withdrawing groups at the alkene terminus are particularly good substrates.