R. Grigg et al., Palladium-catalysed cascade molecular queuing-cycloaddition, cyclocondensation and Diels-Alder reactions, TETRAHEDR L, 41(36), 2000, pp. 7129-7133
The locked s-cis enone system present in 3-methylenequinol-4-ones and chrom
an-4-ones offers substantial further synthetic opportunities as illustrated
by the ability to function as a 2 pi-component in 1,3-dipolar cycloadditio
n reactions, or as a 2 pi- or 4 pi-component in Diels-Alder reactions. Casc
ade molecular queuing-cycloadditions/cyclocondensation are reported. (C) 20
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