title: Low coordinate germanium(II) and tin(II) hydride complexes: efficient catalysts for the hydroboration of carbonyl compounds.
abstract: This study details the first use of well-defined low-valent p-block metal hydrides as catalysts in organic synthesis. That is, the bulky, two-coordinate germanium(II) and tin(II) hydride complexes, L(†)(H)M: (M = Ge or Sn, L(†) = -N(Ar(†))(SiPr(i)3), Ar(†) = C6H2{C(H)Ph2}2Pr(i)-2,6,4), are shown to act as efficient catalysts for the hydroboration (with HBpin, pin = pinacolato) of a variety of unactivated, and sometimes very bulky, carbonyl compounds. Catalyst loadings as low as 0.05 mol % are required to achieve quantitative conversions, with turnover frequencies in excess of 13 300 h(-1) in some cases. This activity rivals that of currently available catalysts used for such reactions.
authors: School of Chemistry, Monash University , P.O. Box 23, Melbourne, VIC, 3800, Australia.
authors: Terrance J
authors: TJ
authors: Hadlington
authors: Markus
authors: M
authors: Hermann
authors: Gernot
authors: G
authors: Frenking
authors: Cameron
authors: C
authors: Jones