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Free keywords:
HEAVY GRIGNARD-REAGENTS; HALIDE-FREE DIARYLCALCIUM; ALKALINE-EARTH
METALS; CRYSTAL-STRUCTURES; CHEMICAL BEHAVIOR; BENZYL COMPLEXES; ETHER
CLEAVAGE; STRONTIUM; ARYL; REACTIVITYChemistry;
Abstract:
Hydrocarbon-soluble and highly reactive [(L)(x)Ca(CH2SiMe3)(2)] (L = tetrahydropyran, x = 4 (2a); L = tmeda, x = 2 (2b)) is synthesized by the metathesis reaction of Me3SiCH2CaI (1-I) with KCH2SiMe3. The durability of 2a in tetrahydropyran solution at 0 degrees C is sufficiently high for subsequent chemical transformations. The reaction of ICH2SiMe3 with calcium in diethyl ether yields unique cage compound [(Et2O)(2)Ca(I)(2)center dot(Et2O)(2)Ca(I)(OEt)center dot(Et2O)Ca(I) -(CH2,siMe(3))] (3). We demonstrate that alkylcalcium complexes ate valuable reagents for calcium-iodine exchange reactions at Csp2-I functionalities.
