Investigating the Arenyl-Diene Double [3 + 2] Photocycloaddition Reaction
作者:Clive S. Penkett、Jason A. Woolford、Timothy W. Read、Rachel J. Kahan
DOI:10.1021/jo101927a
日期:2011.3.4
The double [3 + 2] photocycloaddition reaction involving arenyl−dienes has been used to assemble seven separate [5.5.5.5] fenestrane structures that include ether and aza variants. The primary photolysis step was a meta photocycloaddition reaction, while a secondary photocycloaddition step formed the fenestrane structure. Investigations involving the insertion of an additional methylene group into
An arene-alkene photocycloaddition-radical cyclization cascade: The first syntheses of cis,cis,cis,trans-[5.5.5.5]-fenestranes
作者:Paul A. Wender、Timothy M. Dore、Mitch A. deLong
DOI:10.1016/0040-4039(96)01740-6
日期:1996.10
The firstcis,cis,cis,trans-[5.5.5.5]-fenestranes have been synthesized in three steps using a novel arene-alkenephotocycloaddition-radicalcyclizationcascade, which creates overall 5 new rings and 8 stereogenic centers. A lead tetraacetate mediated ring expansion of a 5,5-fused ring system, discovered in the course of exploring the chemistry of these new materials, is also described.
作者:Clive S. Penkett、Jason A. Woolford、Iain J. Day、Martyn P. Coles
DOI:10.1021/ja906163s
日期:2010.1.13
remarkable double [3 + 2] photocycloaddition reaction that results in the formation of fenestrane 2 from aromatic acetal 1 is reported. During the formation of 2, fourcarbon-carbonbonds, five newrings, and seven new stereocenters are created in a one-pot process. The reaction occurs in a sequential manner from the linear meta photocycloadduct 3, while the angular meta photocycloadduct 4 undergoes an alternative