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• W4248528230 endingPage "7709" @default.
• W4248528230 startingPage "7704" @default.
• W4248528230 abstract "Abstract While it is known that the addition of Group 1 alkoxides to s ‐block organometallics can have an activating effect on reactivity, the exact nature of this effect is not that well understood. Here we describe the activation of s Bu 2 Mg towards substituted bromoarenes by adding one equivalent of LiOR ( R =2‐ethylhexyl), where unusually both s Bu groups can undergo efficient Br/Mg exchange. Depending on the substitution pattern on the bromoarene two different types of organometallic intermediates have been isolated, either a mixed aryl/alkoxide [{LiMg(2‐FG‐C 6 H 4 ) 2 (OR)} 2 ] (FG=OMe; NMe 2 ) or a homoaryl [(THF) 4 Li 2 Mg(4‐FG‐C 6 H 4 ) 4 ] (FG=OMe, F). Detailed NMR spectroscopic studies have revealed that these exchange reactions and the formation of their intermediates are controlled by a new type of bimetallic Schlenk‐type equilibrium between heteroleptic [LiMg s Bu 2 (OR)], alkyl rich [Li 2 Mg s Bu 4 ] and Mg(OR) 2 , with [Li 2 Mg s Bu 4 ] being the active species performing the Br/Mg exchange process." @default.
• W4248528230 created "2022-05-12" @default.
• W4248528230 creator A5022562955 @default.
• W4248528230 creator A5058020451 @default.
• W4248528230 creator A5074946720 @default.
• W4248528230 date "2021-02-26" @default.
• W4248528230 modified "2023-10-14" @default.
• W4248528230 title "Untangling the Complexity of Mixed Lithium/Magnesium Alkyl/Alkoxy Combinations Utilised in Bromine/Magnesium Exchange Reactions" @default.
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• W4248528230 doi "https://doi.org/10.1002/ange.202016422" @default.
• W4248528230 hasPublicationYear "2021" @default.
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