METHOD OF PRODUCING 1,2-DIALKYLBORINANES Russian patent published in 2019 - IPC C07F5/02 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing 1,2-dialkylboronanes of general formula (1) , where R = n-C₅H₁₁, n-C₆H₁₃, R₁= n-C₆H₁₃, n-C₈H₁₇. Method involves interaction α-olefin (oct-1-ene, or dec-1en) with boron-containing reagent RBCl₂⋅SMe₂ (where R is specified above), by pre-obtained reaction of pent-1-ene or hex-1-ene with HBCl₂⋅SMe₂ at room temperature (~ 20–22 °C) for 3 hours. Reaction is carried out in the presence of Mg (powder) and catalyst Cp₂TiCl₂, in molar ratio RBCl₂⋅SMe₂:α-olefin: Mg: Cp₂TiCl₂= (10÷14):10:(20÷40):(1.8÷2.2), in tetrahydrofuran, in an inert atmosphere, with reaction mass cooling to 0 °C for 1 hour and subsequent stirring at temperature ~ 60–65 °C for 4–8 hours.

EFFECT: obtained compounds can be used as components of catalytic systems in oligomerisation and polymerisation of olefin, diene and acetylene hydrocarbons, as well as in fine organic and organometallic synthesis.

1 cl, 1 tbl, 3 ex