Borylated Cymantrenes and Tromancenium Salts with Unusual Reactivity.

ABSTRACT: In continuation of our study of the chemistry of cationic (cycloheptatrienyl)(cyclopentadienyl)manganese(I) sandwich complexes, so-called "tromancenium" salts, we report here on their boron-substituted derivatives focusing on useful boron-mediated synthetic applications. Transmetalation of lithiated tricarbonyl(cyclopentadienyl)manganese ("cymantrene") with boric or diboronic esters affords monoborylated cymantrenes that are converted by advanced high-power LED photosynthesis followed by oxidation with tritylium to their 8-boron-substituted tromancenium complexes. These new functionalized tromancenium salts are fully characterized by ¹H/¹¹B/¹³C/¹⁹F/⁵⁵Mn NMR, IR, UV-vis, HRMS spectroscopy, single-crystal structure analysis (XRD) and cyc

SUBMITTER: Thaler R 

PROVIDER: S-EPMC9490842 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature