We
repo
rt an imp
roved synthesis of
cis-[Ru(CH
3CN)
2((1-3-
rs/eta.gif" BORDER=0 >)-C
3H
5)((1,2:5,6-
rs/eta.gif" BORDER=0 >)-C
8H
12)]BF
4and its use in the synthesis of [Ru(bisphosphine)((1-3:5,6-
rs/eta.gif" BORDER=0 >)-C
8H
11)(CH
3CN)]BF
4 (whe
rebisphosphine = (
R)-BINAP, (
R)-Tol-BINAP). The
rmolyses of the complexes [Ru(bisphosphine)((1-3:5,6-
rs/eta.gif" BORDER=0 >)-C
8H
11)(CH
3CN)]BF
4 affo
rd [Ru(bisphosphine)((1-5-
rs/eta.gif" BORDER=0 >)-C
8H
11)]BF
4, whichse
rve as convenient p
recatalysts to the active hyd
rogenation catalysts
fac-[Ru(bisphosphine)(H)(sol)
3]BF
4 (sol = THF, acetone,
i-P
rOH). We compa
re the p
rope
rties and activities of thesecatalysts with those of
related, established systems.