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2005
C-C bond formation
O 0282
Lithiation Reactions Catalyzed by Linear and Cross-Linked Arene-Based PolyGeneration of Functionalized Organolithium Compounds. — A new meth07- 049 mers.
od for the addition of organolithium compounds to various electrophiles is presented.
The method involves the generation of organolithium intermediates from chlorinated
acetals, α-chloro ethers, dichlorides, benzo-fused oxacycles and lithium powder in the
presence of 2-vinylnaphthalene polymers as catalysts. The results obtained are comparable to those achieved with free arene catalysts, and soluble linear poly(vinylnaphthalene), its copolymer with styrene as well as a cross-linked insoluble vinylnaphthalene—styrene—divinylbenzene copolymer are applied with good results. —
(CANDELA, P.; GOMEZ, C.; YUS, M.; Russ. J. Org. Chem. 40 (2004) 6, 795-801;
Dep. Quim. Org., Fac. Cienc., Univ. Alicante, E-03080 Alicante, Spain; Eng.) —
Mischke
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