Synonyms:142633-71-4;Lithium 2,3,5,6-tetramethylbenzen-1-ide;duryllithium;DTXSID00517466;NZBXXUZVYSVTIE-UHFFFAOYSA-N
99.90% *data from raw suppliers
The research presents a comprehensive study on the synthesis and reactivity of exocyclic unsaturated heterodiborolanes and their diborylhexadiene precursors, leading to the formation of 2-aza-4,5-dicarba-nidohexaboranes(6). The experiments involved the generation of aryl-substituted 3,4-diboryl-2,4-hexadienes through reactions with xylyllithium or duryllithium. Key reactants included 3,4-bis(dimethoxyboryl)-2,5-dimethyl-2,4-hexadiene and 3,4-bis(dichloroboryl)-2,5-dimethyl-2,4-hexadiene. Cyclization reactions with heptamethyldisilazane and MeN(SiMe3)2 produced 2,5-diaryl-3,4-diisopropylidene-1-hetero-2,5-diborolanes in high yields. The study also detailed the synthesis of 1-aza-2,5-di-tert-butyl-3,4-diisopropylidene-1-methyl-2,5-diborolane from the reaction of 5a with tert-butyllithium. The products were characterized using mass spectrometry (MS), proton (1H), boron-11 (11B), and carbon-13 (13C) nuclear magnetic resonance (NMR) spectroscopy, and X-ray structure analyses, which revealed the molecular structures and confirmed the successful formation of the target compounds.
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