Under selected conditions, the hydroboration of 2, 3-dimethyl-2-butene with 1 equiv of monochloroborane proceeds cleanly to give the monohydroboration product, thexylchloroborane (ThxBHCl). This reaction was examined with several monochloroborane complexes, including BH, Cl. THF, BH2Cl. 0Et2, and BH2CESMe2 The resulting thexylchloroboranes were fully characterized by IR and llB NMR spectroscopy. Monomeric ...