Diborylmethane derivative

Previously we have shown that nido-2,3,5-tricarbahexaboranes(7) are formed by hydroboration reactions of 1,3-dihydro-1,3-diborafulvenes 1 and of 4,5-diisopropylidene-1,3-diborolenes 3, obtained by ring-closure of cis-diborylethenes with (Me3Sn)2C==CMe2 and of 3,4-diIithio-2,5-dimethylhexa-2,4-diene-diid with diborylmethane derivatives . The stability of the 2,3,5-tricarbahexaboranes 2 depends on the substituents in the basal positions of the carboranes. 

Keywords Allyl bromides, benzyl bromides, diborylmethane derivative, Pd-catalysts such as [Pd-PEPPSI-IPr] (l)/Pd[P(f-Bu)3l2 (2), aq. KOH, dioxane, room temperature, Suzuki-Miyaura cross-coupling (SMC) reaction, C-C bond formation, regio- and chemoseletivity, homoallylboronates, alkylboronates... 

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