The reactions of 2,2-difluoro-4-methylnaphtho[l,2-e] -1,3,2-dioxaborin and Its [2,1-e] Isomer with Carbonyl compounds and with Aniline

2,2-Difluoro-4-methylnaphtho[l,2-e]-l,3,2-dioxaborin ( 1 ) and its [2,1-e]isomer ( 2 ) react with equimolecular quantities of carbonyl compounds, giving colored ethylenic derivatives. With aniline, 1 and 2 give the corresponding oxazaborins 21 and 22 . The structures of 1 and 2 are discussed.