Titanium-Catalyzed Synthesis of 1,1-Diborylalkanes from Aryl Alkenes
A milder and general atom-economical synthesis of 1,1-diborylalkanes from aryl alkenes with pinacolborane(HBpin)at room temperature is achieved.The key to success is using an earth-abundant titanium-based catalyst(Cp2TiCl2)with the help of lithium methoxide(MeOLi)as the activator.It is proposed that the in-situ formation of Ti-H species from Cp2TiCl2/MeOLi/HBpin system is the vital active species for the catalytic results.
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