Alkenes organoboron compounds

Addition of dialkyl aluminum hydrides (dialkyl alanes) to C=C double bonds in alkenes (hydroalumination) leads to trialkyl alanes (291, 298). For the preparation of higher trialkyl alanes it is proposed to add diethyl-alane to higher 1-alkenes and from the resulting ethyl-alkyl alane mixtures (analogous to the organoboron compounds) (142) to remove the ethyl groups as triethylalane by distillation (241) ... 

The alkyl- or alkenyl-organoboron compound used in a Suzuki reaction is prepared by hydroboration of a terminal alkene or a terminal alkyne, respectively. Often the boron-contairting compound is catecholborane. 

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