The structure of the title compound, 2-CH3O-C5H3N-3-B(OH)2 or C6H8BNO3, comprises two crystallographically independent molecules. The molecules are linked to each other by intermolecular O-H...N and C-H...O bonds to produce an infinite chain, while a two-dimensional structure is formed as a result of pi-pi interactions of planar molecules.
Selected activated bromobenzenes XC 6 H 4 Br (X = 4-Br, 4-I, 4-CN, 2-CN) were successfully deprotonated with lithium 2,2,6,6-tetramethylpiperidide (LTMP) in THF at -80°C. Thus, 2,5-dibromo-, 2-bromo-5-iodo-, 5-bromo-2-cyano-, and 3-bromo-2-cyanophenyllithium were obtained as stable intermediates and could be converted by subsequent reactions
2008 Halogen compounds Q 0090 Regioselective Generation of Aryllithiums from Substituted Bromobenzenes XC 6 H 4 Br (X: 4-Br, 4-I, 4-CN, 2-CN). -Activated bromobenzenes (I) and (XVIII) are successfully deprotonated by LiTMP to give stable lithiated intermediates which are converted to functionalized bromoarenes, including synthetically useful arylcarboxylic and arylboronic acids. -(LULINSKI*, S.; SERWATOWSKI, J.; SZCZERBINSKA, M.; Eur.
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