5-Fluoro-and 5-methyl-1, 3-didehydrobenzene—a matrix isolation study

W Sander, M Exner

Index: Sander, Wolfram; Exner, Michael Journal of the Chemical Society. Perkin Transactions 2, 1999 , # 11 p. 2285 - 2290

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Abstract

The UV photolysis of [2.2] metaparacyclophanediones 4b and 4c leads to α-cleavage and formation of CO, p-xylylene 5, and m-benzynes 2b and c with a fluorine or methyl substituent in the 5-position, respectively. The IR spectra of 2b and 2c were assigned by comparison with that of the parent m-benzyne 2a and with spectra calculated at the BLYP/6-311G (d, p) level of theory. Both band positions and intensities of the experimental spectra are in ...