Aldehyde olefination with a ruthenium(II) salen catalyst

Reactivity of Nickel Complexes Bearing P(C═X)P Ligands (X = O, N) Toward Diazoalkanes: Evidence for Phosphorus Ylide Intermediates

“…This reaction is known for a wide variety of metals (Ru, Rh, Fe, Co, Cu, Mo, Ir) with catalytic applications. 4,[23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40]44 A similar reaction was reported in 1998 by Gong and co-workers performing a Wittig-type reaction on (PCy 3 ) 2 Ni(η 2 -CO 2 ) yielding a ketene. 45 In addition, the formation of unsymmetrical olefins from ketones and dihaloalkanes in the presence of stoichiometric amounts of (Et 3 P) 4 Ni has been ascribed to a carbene/ylide pathway.…”

Enantioselective Intramolecular Cyclopropanation of cis-Alkenes by Chiral Ruthenium(II) Schiff Base Catalysts and Crystal Structures of (Schiff base)ruthenium Complexes Containing Carbene, PPh3, and CO Ligands

“…[Ru(2,4-I-salen)(PP h 3 ) 2 ] (1f). Yield: 70%. IR (KBr pellet, cm -1 ): 3051, 2927, 1438, 1140, 690, 517.…”

An Efficient Method for Solution-Phase Parallel Synthesis of 2-Quinoxalinol Salen Schiff-Base Ligands

“…[7][8][9] As catalysts, these have proven quite useful, in particular, when incorporated into solid supports 10,11 and for chiral or stereoselective reaction catalysis. [12][13][14][15][16][17][18][19][20][21][22][23] In this article, we combine the salen coordination framework with a second set of ligand building blocks to modify the ligand properties to our specific applications of interest. Derivatives of 2-quinoxalinols are key intermediates as bioactive agents in agriculture; 24 they also have been used in dyes 25 and have been key pharmaceutical or medicinal intermediates.…”

“…Ruthenium salen complexes have been studied as protein kinase inhibitors mimicking organic indolocarbazoles . Salen or salenophene ligands and their complexes have also been applied as catalysts in a variety of processes as Cu, Mn, or Ru complexes including as catalytic scavengers of hydrogen peroxide and cytoprotective agents, in the catalytic oxidation of secondary amines, as enantioselective catalysts for asymmetric epoxidation of unfunctionalized olefins, , or most commonly, as catalysts for ring-opening metathesis. − As catalysts, these have proven quite useful, in particular, when incorporated into solid supports , and for chiral or stereoselective reaction catalysis. − …”