Stereospecific synthisis of 2, 3-dihydro-2-metallaphenalenes, meso-[M (η-C 5 H 5) 2 R 2][M= Zr, Hf; R 2=(CHSiME 3) 2 C 10 H 6], via an unstable dilithium reagent,[R 2 …

RI Papasergio, CL Raston

Index: Papasergio, Rocco I.; Raston, Colin L. Journal of the Chemical Society, Chemical Communications, 1982 , # 17 p. 1023 - 1025

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Abstract

In situ Grignard reactions of 1, 8-(ClCH2) 2C10H10H6 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 [[graphic omitted] C10H6][Li (tmeda)] 2 ...