Aryl‐Aryl Coupling of Salicylic Aldehydes through Oxidative CH‐activation in Nickel Salen Derivatives. Issue 30 (12th August 2019)

• Record Type: Journal Article
• Authors: Yankin, Andrei N.; Lukyanov, Daniil A.; Beletskii, Evgenii V.; Bakulina, Olga Yu.; Vlasov, Petr S.; Levin, Oleg V.
• Is Part Of: ChemistrySelect. Volume 4:Issue 30(2019)
• Page Start: 8886
• Page End: 8890
• Publication Date: 2019-08-12
• Subjects: Aldehydes -- biaryls -- C−C coupling -- heterometallic complexes -- polymerization; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.201902385
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: The preparative electrosynthetic procedure for gram‐scale preparation of symmetric 4, 4′‐dihydroxy‐3, 3′‐diformylbiphenyls from salicylic aldehydes via the intermediate formation of ethylene‐bridged bis((2‐hydroxybenzylidene)imino)nickel (II) complexes is reported for the first time. This procedure represents a practical route to the variety of rare bisphenol derivatives. The electrochemical aryl‐aryl coupling via an oxidative CH – activation in NiSalens is exploited for facile and selective C−C bond formation. Abstract : The preparative electrosynthetic procedure for gram‐scale preparation of symmetric 4, 4′‐dihydroxy‐3, 3′‐diformylbiphenyls from salicylic aldehydes via the intermediate formation of NiSalen is reported for the first time. This procedure represents a practical route to the variety of rare bisphenol derivatives. The electrochemical aryl‐aryl coupling via an oxidative CH‐activation in NiSalens is exploited for facile and selective C−C bond formation. The procedure developed was found to be insensitive for water.