Synthesis and Properties of the 1,2,SThiadiborol SystemCleavage of 1.4-diborin derivatives 1 a and 2a by triiodoborthiin, redox reactions between o-diiodoarenes, triiodoborane and sulfur, and cyclisation of aryldiiodoboranes with triiodoborthiin lead to the formation of the thiadiborol derivatives 31 and 4a. These iodo compounds are converted by redox reactions and ligand exchange into the corresponding Br, C1, SCH3 and CH, derivatives. The halogen compounds form I : I and 2: 1 donor-acceptorcomplexes with the Lewis base (CH3)zS. Substitution of the sulfur by amine-and hydrazine derivatives yields the heterocycles BzC~N, 10, and BzCzNz, 12.
Das Gummibärchen birgt ein hohes Motivationspotenzial, das auch für im Chemieunterricht genutzt werden kann. Die beschriebenen Experimente wollen einen Beitrag dazu leisten, aus dem Objekt der Essbegierde ein Objekt der Wissbegierde zu machen. Die vorgestellte „Gummibärchen‐Chemie”︁ reicht von einfachen Untersuchungen zur Schwimmfähigkeit des Gummibärchens über Nachweisreaktionen seiner organischen Inhaltsstoffe bis hin zu Anwendungen aus der Bio‐ und Elektrochemie.
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