Abstract:
1,8-Bis-imido-naphthalene compounds (I) are new. 1,8-Bis-imido-naphthalene compounds of formula (I) are new. A = formula (II)-(VI); R = L, or two R groups on the same N atom together form a 4-5C alkylene bridge in which one of the non-N-neighboring CH2 groups can be replaced by an oxygen atom, imino group or 1-4C alkylimino; L = 1-18C alkyl, 3-10C cycloalkyl or aryl; X = -(CH2)m, -(CH2)m-O-(CH2)(i-m)- or -(CH2)m-N(R )-(CH2)(i-m); m = 1-5; i = 2-10 provided that i \- m+1; Y = formula (VII) or (VIII); p, q = 1-4; j = 3-12 provided that j \- (p+q)+1; and Z' = H, L, OL, NL2 or halogen. An Independent claim is also included for a process for the preparation of (I).
Abstract:
Las olefinas se pueden epoxidar usando los catalizadores I: (Ver Formula) donde M es una metal del grupo de transicion 4. a 7?? de la Tabla periodica de los Elementos, L1 es una ligadura de oxido de amina, oxido de fosfina, oxido de areina, N-oxido de piridina o piridina, de las formulas II, III, VII o VII, L2 es una ligadura auxiliar acostumbrada o una ligadura ulterior L1, o un sitio de coordinacion libre, X es oxígeno de oxo o una ligadura de imido, m es 1 o 2, y n es 1, 2 o 3.
Abstract:
Liquid phase catalytic oxidation of organic compounds with peroxides is effected using catalysts comprising homogeneously-dissolved Au- or Ag-containing complexes.
Abstract:
PCT No. PCT/EP96/03888 Sec. 371 Date Mar. 11, 1998 Sec. 102(e) Date Mar. 11, 1998 PCT Filed Sep. 4, 1996 PCT Pub. No. WO97/10054 PCT Pub. Date Mar. 20, 1997Olefins can be epoxidized using catalysts I where M is a metal of the 4th to 7th transition group of the Periodic Table of the Elements, L1 is an amine oxide, phosphine oxide, arsine oxide, pyridine N-oxide or pyridine ligand of the formula II, III, VII or VIII, L2 is a customary auxiliary ligand or a further ligand L1 or a free coordination site, X is oxo oxygen or an imido ligand, m is 1 or 2, and n is 1, 2 or 3.
Abstract:
Process for preparing double metal cyanide catalysts of the general formula (I) M2a[M1(CN)rXt]b (I) where M2 is preferably Co(III) or Fe(III), and M1 is preferably Zn(II), X is a group other than cyanide which forms a coordinate bond to M1 and is selected from the group consisting of carbonyl, cyanate, isocyanate, nitrile, thiocyanate and nitrosyl, a, b, r, t are integers which are selected so that the compound is electrically neutral, by reacting a) a cyanometallic acid of the general formula (II) Hw[M1(CN)r(X)t] where M1 and X are as defined above, r and t are as defined above and w is selected so that the compound is electrically neutral, with b) a readily protolyzable metal compound (IIIa) M2Rw and/or (IIIb) M2RuYv, where M2 is as defined above, the groups R are identical or different and are each the anion of a very weak protic acid having a pKa of >=20, and Y is the anion of an inorganic mineral acid or a moderately strong to strong organic acid having a pKa of from -10 to +10, w corresponds to the valence of M2, u+v corresponds to the valence of M2, with u and v each being at least 1, with the reaction being carried out in a nonaqueous, aprotic solvent.
Abstract:
Catalysts for epoxidizing olefins have the formula (I), in which M stands for a metal of the 4th to 7th secondary group of the periodic table of elements; L1 stands for an amine oxide, phosphane oxide, arsane oxide, pyridin-N-oxide or pyridine ligand having the formulas (II), (III), (VII) or (VIII); L2 stands for a usual auxiliary ligand or another ligand L1 or a free co-ordination site; X stands for oxo-oxygen or imido ligands; m equals 1 or 2; and n equals 1, 2 or 3.