Photoinitiated [6pi + 2pi] cycloadditions of allenes with (eta(6)-cycloheptatriene)tricarbonylchromium(0) (1) are described. An example of asymmetric induction obtained by reaction of 1 with a chiral 1,3-disubstituted allene is also reported.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2688831PMC
http://dx.doi.org/10.1021/ol802401aDOI Listing

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