Stereospecific synthisis of 2,3-dihydro-2-metallaphenalenes, meso-[M(η-C5H5)2R2][M = Zr, Hf; R2=(CHSiME3)2C10H6], via an unstable dilithium reagent, [R2(Li(tmeda))2](tmeda = tetramethyl-ethylenediamine), which is coverted the complex [CHSiMe2C(SiMe3)C10H6][Li(tmeda)]2 containing a silicon heterocycle dicarbanion

Rocco I. Papasergio, Colin L. Raston

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

In situ Grignard reactions of 1,8-(ClCH2)2C10H6 have yielded 2,3-dihydro-2,2-dimethyl-2-silaphenalene, which can be selectively momolithiated at the 1-position, and 1,8-(Me3SiCH2)2C10H6, a compound readily dilithiated and subsequuently converted into the zirconium and hafnium metallacycles, meso-[M(η-C5H5)2(CHSiMe3)2C10H6]; the dilithium complex is converted into the complex [CHSiMe3C(SiMe3)C10H6][Li(tmeda)]2 containing a silicon heterocycle dicarbanion and characterized as the substituted silaphenalene, the same product as the ClSiMe3 adducts of momo-lithiated silaphenalene.

Original languageEnglish
Pages (from-to)1023-1025
Number of pages3
JournalJournal of the Chemical Society - Series Chemical Communications
Issue number17
DOIs
Publication statusPublished - 1 Sep 1982
Externally publishedYes

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