Abstract
The tungsten hydride complex (η5-C5H5)W(CO)3H (1-W) functions as a hydrogen atom donor in the [(η5-C5Me5)Ru(NCMe)3]PF6-mediated Bergman cycloaromatization reaction of (Z)-dodeca-4,8-diyn-6-ene. The strong M−H bond in 1-W does not react with the enediyne substrate but does react with the diradical arising from cyclization, thereby demonstrating the advantages of strong metal−hydrogen bonds in the hydrogen atom transfer reactions of metal hydrides with substrates involving alkenes and alkynes.
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