M. Olaru, R. Kather, E.Hupf, E.Lork, S.Mebs, J. Beckmann

Journal: Angewandte Chemie (2018) 57, 5917-5920 .

https://doi.org/10.1002/anie.201712944

Transmetallation of Pb(OAc)₄ with R₂Hg (1), followed by treatment with HCl in Et₂O, provided RPbCl₃ (2), the first kinetically stabilized monoorganolead trihalide that resists reductive elimination under ambient conditions. The kinetic stabilisation relies on an intramolecularly coordinating O‐donor substituent (R=6‐Ph₂P(O)‐Ace‐5‐). The gram‐scale preparation of 2 was key for the synthesis of unsymmetrically substituted diaryllead dichlorides RR′PbCl₂ (3 a, R′=Ph; 3 b, R′=4‐MeOC₆H₄; 3 c, R′=4‐Me₂NC₆H₄).