Reaktionen von Sauerstoff- bzw. Schwefel-Heterocyclen mit Natrium und Dichlor(diisopropylamino)boran

Reactions of Oxygen- and Sulfur-Heterocycles with Sodium and Dichloro(diisopropylamino)borane Thiophene reacts with sodium and dichloro(diisopropylamino)borane to give 2,4-Bis-(diisopropylamino)-1,3,2,4-dithiadiboretane ( a ). In the reactions of dibenzothiophene, dibenzofurane, and xanthene, resp., with sodium and dichloro(diisopropylamino)borane one side of the hetero-bridge is split. Thus one obtains the amino(phenylthio)borane 1 and the amino(phenoxy)- boranes 2 and 3 . The compounds are characterized analytically and spectroscopically (MS; NMR: ¹H, ¹¹B, ¹³C).