A. Fayoumi, D. M. Lyubov, A. V. Cherkasov, G. K. Fukin, A. A. Trifonov, “Deprotonation of 1,1'-methylenebis[4-tert-butyl-2-(diphenylphosphino)benzene] and its analogues: synthesis and crystal structure of {5-But-2-[4-But-2-(Ph2P)C6H3(Ph)CH]C6H3P(Ph)K(OEt2)}2”, Mendeleev Commun., 2019, том 29, выпуск 3,страницы 331

Эта публикация цитируется в 2 статьях

Deprotonation of 1,1'-methylenebis[4-tert-butyl-2-(diphenylphosphino)benzene] and its analogues: synthesis and crystal structure of {5-But-2-[4-But-2-(Ph2P)C6H3(Ph)CH]C6H3P(Ph)K(OEt2)}2

A. Fayoumi^a, D. M. Lyubov^a, A. V. Cherkasov^a, G. K. Fukin^a, A. A. Trifonov^ab

^a G.A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, Nizhnii Novgorod, Russian Federation
^b A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Moscow, Russian Federation

Аннотация: Oxidation of 1,1'-methylenebis[4-tert-butyl-2-(diphenylphosphino)benzene] by H2O2 or S8 in toluene affords two new PCP-type pincer ligands. The methylene group deprotonation in the new ligands as well as in their precursor by n-BuLi or LiCH2SiMe3 failed, while the methylene group in the precursor 1,1'-methylenebis[4-tert-butyl-2-(diphenylphosphino)benzene] was readily metallated by Lochmann–Schlosser superbase to form the unstable potassium complex which in turn was readily transformed into new {5-But-2-[4-But-2-(Ph2P)C6H3(Ph)CH]C6H3P(Ph)K(OEt2)}2 complex due to phenyl group migration.

Ключевые слова: pincer ligands, P-ligands, synthesis, diphenylmethanides, alkali metals.

Язык публикации: английский

DOI: 10.1016/j.mencom.2019.05.031