The 1:1 complexes formed in situ from nickel(II) acetate and the thios
emicarbazones of ortho-hydroxy aromatic aldehydes catalyze the hydrosi
lylation of imines. A variety of imines were reduced in good to excell
ent yields employing two equivalents of a silane such as triethylsilan
e and 5 mol% of the catalysts.