2024
DOI: 10.1002/ange.202318956
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Metallacyclobuta‐(2,3)‐diene: A Bidentate Ligand for Stream‐line Synthesis of First Row Transition Metal Catalysts for Cyclic Polymerization of Phenylacetylene

John B. Russell,
Debabrata Konar,
Taylor M. Keller
et al.

Abstract: Described here is a direct entry to two the first examples of 3d transition metal catalysts that are active for the cyclic polymerization of phenylacetylene, namely, [(BDI)M{k2‐C,C‐(Me3SiC3SiMe3)}] (2‐M) (BDI = [ArNC(CH3)]2CH−, Ar = 2,6‐iPr2C6H3; M = Ti, V). Catalysts are prepared in one step by the treatment of [(BDI)MCl2] with 1,3‐dilithioallene [Li2(Me3SiC3SiMe3)]. Complexes 2‐M have been spectroscopically and structurally characterized and the polymers that are catalytically formed from phenylacetylene wer… Show more

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