Abstract:The reaction of the binuclear rhodium complex [(ηϪC 5 H 5 ) 2 Rh 2 (μ-CO)(μ-η 1 :η 1 -C 2 (CF 3 ) 2 )] with a series of dichalcogenides, R 2 E 2 (E ϭ S, Se, Te; R ϭ Me, Et, i-Pr, Ph, Fc; not all combinations) has provided mixtures of complexes, the majority of which have been characterized by standard spectroscopic techniques. These complexes arise as a consequence of carbonyl substitution followed by chalcogen-chalcogen bond cleavage giving [(675 (E ϭ Se, Te; R ϭ Me, Et, i-Pr, Ph, Fc; not all combinations). I… Show more
This perspective begins with the discussion of various basic synthetic approaches applied for the synthesis of several organotellurium ligands, their chemistry derived from platinum group metals, and the reactivity difference among them.
This chapter is an update to the earlier Science of Synthesis contribution (Section 39.32.2) describing methods for the synthesis of transition metal alkanetellurolates and their applications in organic synthesis. Synthetic methods developed in recent years concern both terminal and bridging alkanetellurolates. New applications for this class of compounds in organic synthesis have not been proposed. However, they have been postulated as catalytic intermediates in some transition-metal-mediated cross-coupling reactions.
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