Stereocontrolled oxaspirocyclization of conjugated dienes via palladium catalysis
作者:Jan E. Baeckvall、Pher G. Andersson
DOI:10.1021/jo00007a002
日期:1991.3
Palladium-catalyzed oxaspirocyclizations
作者:Pher G. Andersson、Ylva I.M. Nilsson、Jan-E. Bäckvall
DOI:10.1016/s0040-4020(01)80776-6
日期:1994.1
(π-allyl)palladium intermediate, which is attacked by an acetate or a chloride nucleophile leading to an overall 1,4-addition across the diene. The intermediate (π-allyl) palladium complex was independently prepared and characterized. The stereochemistry of the 1,4-addition can be controlled to give either cis or trans 1,4-addition across the double bonds. The oxaspirocyclization was applied to the total