Boron Complexes with Propiolamidinato Ligands: Synthesis, Structure, and Photophysical Properties.

ABSTRACT: Two series of boron derivatives with propiolamidinato ligands, [BPh₂{C(C≡CAr)(NR)₂}] (Ar = Ph, p-MeOPh, p-FPh, p-Me₂NPh, or phen; R = iPr or p-tolyl), were synthesized and structurally characterized. The corresponding propiolamidine (or propargylamidine) proligands have been obtained through sustainable methods. One is the catalytic hydroalkynylation of diisopropylcarbodiimide with different terminal alkynes, using simple ZnEt₂ as a precatalyst. Alternatively, to obtain propiolamidines with aromatic groups on the nitrogen atoms, the formation of lithiated derivatives of terminal alkynes by reaction with n-BuLi in air and at room temperature, and subsequent addition to the di-p-tolylcarbodiimide, under the

SUBMITTER: Parra-Cadenas B 

PROVIDER: S-EPMC11220760 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature