Abstract Octamethyl methanetetraboronate,[(MeO) 2 B] 4 C, has been prepared in> 100 g batches by the reaction of dimethoxyboron chloride and carbon tetrachloride with lithium in tetrahydrofuran. Analogous reactions have yielded the methanetriboronic esters [(MeO) 2 B] 3 CH,[(MeO) 2 B] 3 CC 6 H 5, and [(MeO) 2 B] 3 C-CH 3. and the methanediboronic esters [(MeO) 2 B] 2 CH 2 and [(MeO) 2 B] 2 CHC 6 H 5. A preliminary survey of the properties of ...