“…Recently reported are, among others, an asymmetric transfer-hydrogenation of aryl ketones with a chiral iron(II) bis(isonitrile) complex 26 ; an iron-(or cobalt)-catalyzed asymmetric hydrosilylation of ketones with chiral bis(oxazoline) complexes 27 ; regioselective 1,2-hydrosilylation of 1,3-dienes with iron bis-(2-pyridylaldimine) complexes 28 ; an iron-catalyzed dehalogenation of aryl halides 29 ; and inexpensive routes to key N-heterocyclics (including indoles) via iron-catalyzed cyclodenitrogenation of azides 30 . Catalysis with osmium is less diverse, but it is worth mentioning, perhaps, the elusive 7-endo-cycloisomerization to 1,2-dihydro-3-benzoxepines which is far more efficient than under Ru-, Rh-or W-catalysis 31 ; note also the osmium equivalent of Noyori′s homogeneous asymmetric hydrogenation of ketones 32 , affording high enantioselectivities with astonishing TOF values up to 300,000 h -1 . Iridium catalysis has also been in the news again with a transfer-hydrogenative Nalkylation, offering unprecedented substrate scope and being a valuable alternative to classical routes based on hydridoborates 33 ; in addition, there is a report of a simple asymmetric and regioselective conversion of allyl alcohols to prim.…”