Palladium catalysed queuing processes. Part 1: Termolecular cyclization–anion capture employing carbon monoxide as a relay switch and hydride, organotin(IV) or boron reagents
作者:Stephen Brown、Stephen Clarkson、Ronald Grigg、W.Anthony Thomas、Visuvanathar Sridharan、D.M Wilson
DOI:10.1016/s0040-4020(00)01103-0
日期:2001.2
enhance the scope of our cyclization–anion capture methodology, is introduced and exemplified by a wide variety of catalytic cyclization–carbonylation–anion capture processes employing hydride, organostannanes and NaBPh4 as anion capture agents. Mono- and bis-cyclization processes forming 5- and 6-membered rings are described, all of which employ CO at atmospheric pressure. Cyclocarboformylation processes
Sbstituted chroman derivatives, processes for their preparation and their use as antiinflammatory agents
申请人:Schmees Norbert
公开号:US20070129358A1
公开(公告)日:2007-06-07
The invention relates to polysubstituted heterocyclic compounds of the general formula (I)
processes for their preparation and their use as anti-inflammatory agents.
Palladium(0)-catalysed tri- and tetra-molecular queuing cascades are described involving five- and six-membered ring formation accompanied by carboformylation of a proximate alkene and employing carbon monoxide (1 atm) and diphenylmethylsilane as the source of the formyl group.