Preparative Organic Chemistry
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ChemInform Abstract: Generation of Diatomic Sulfur from Organometallic Precursors.
First published: February 7, 1989
Abstract
Diatomic sulfur (II) is generated by treating titanocene pentasulfide (Ia) or its zirconocene analogue (Ib) with triphenylphosphorus dibromide.
ChemInform Abstract
Diatomic sulfur (II) is generated by treating titanocene pentasulfide (Ia) or its zirconocene analogue (Ib) with triphenylphosphorus dibromide. Trapping experiments with 2,3-dimethyl-1,3-butadiene (III) yield the cyclic disulfide (IV). The diphenylbutadiene (V) proves to be unsuitable as S2 scavenger, but (II) and 1,3-cyclohexadiene (VII) produce the bicyclic disulfide (VIII). Hafnocene pentasulfide (Ic) is not cleaved upon reaction with the phosphorus dibromide.
