Photoinduced Reductive C-C and C-Heteroatom Couplings from Bis-cyclometalated Pt(IV) Alkynyl Complexes.

ABSTRACT: Unsymmetrical dicarboxylato complexes [Pt(tpy)₂(O₂CR)₂] [tpy = cyclometalated 2-(p-tolyl)pyridine, R = Me, CF₃] react with the terminal alkynes 4-methoxyphenylacetylene, phenylacetylene, 4-(trifluoromethyl)phenylacetylene or 3,5-difluorophenylacetylene in the presence of a base to produce complexes mer-[Pt(tpy)₂(O₂CR)(CCAr)], in which the metalated carbon atoms are in a meridional arrangement. Irradiation of the trifluoroacetato derivatives with a 365 nm LED source leads to isomerization to the facial complexes, which can be converted to chlorido derivatives upon reaction with NH₄Cl. In contrast, irradiation of the acetato derivatives leads to four different processes, namely, reduction to cis

SUBMITTER: Lopez-Lopez JC 

PROVIDER: S-EPMC10481375 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature