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

Autor:	Georgy K. Fukin, Dmitry M. Lyubov, Alexander A. Trifonov, Anton V. Cherkasov, Ahmad Fayoumi
Rok vydání:	2019
Předmět:	010405 organic chemistry Superbase General Chemistry Crystal structure 010402 general chemistry 01 natural sciences Medicinal chemistry Toluene 0104 chemical sciences Pincer movement chemistry.chemical_compound Deprotonation chemistry Phenyl group Methylene Benzene
Zdroj:	Mendeleev Communications. 29:331-333
ISSN:	0959-9436
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9aeb11ef75619f0fc4b58a4c7bd38b41 https://doi.org/10.1016/j.mencom.2019.05.031 Zobrazit plný text záznamu Full Text from ScienceDirect