Polar and stereochemical aspects of 1,2-photoaddition of ethylenes to benzene
- 1 January 1974
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Chemical Communications
- No. 9,p. 334-336
- https://doi.org/10.1039/c39740000334
Abstract
Two observations concerning photochemical 1,2-cycloadditions of mono-olefins to benzene may be of wider significance: the 1,2-process tends to occur most readily with olefins having either marked donor or acceptor properties, otherwise 1,3-addition tends to be preferred;and 1,2-additions of the donor olefins cis-cyclooctene and cis-but-2-ene are stereospecifically endo, whereas 1,2-addition of the acceptor maleimide is stereospecifically exo.Keywords
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