摘要:
The present invention relates to a catalyst based on ruthenium complexes and to a process for the asymmetric epoxidation of olefins using catalysts based on ruthenium complexes.
摘要:
The invention relates to a process for the preparation of carbonyl compounds by the oxidation of alcohols in the presence of osmium compounds as catalysts in water or a solvent mixture containing water.
摘要:
This invention relates to process for dihydroxylation of olefins using transition metal catalysts to obtain monofunctional, bifunctional, and/or polyfunctional 1,2-diols of the formula (I) R1R2C(OH)—C(OH)R3R4 (I) where R1 to R4 are defined herein, by reacting an olefin of the formula (II) R1R2C═CR3R4 (II) where R1 to R4 are defined as for formula (I), with molecular oxygen in the presence of an osmium, ruthenium, or manganese compound in water or a water-containing solvent mixture at a pH of from 7.5 to 13.
摘要:
This invention relates to process for asymmetric dihydroxylation of olefins using osmium catalysts to obtain monofunctional, bifunctional, and/or polyfunctional chiral 1,2-diols of the formula (I) R1R2C(OH)—C(OH)R3R4 (I) where R1 to R4 are defined herein, by reacting an olefin of the formula (II) R1R2C═CR3R4 (II) where R1 to R4 are defined as for formula (I), with molecular oxygen in the presence of an osmium compound and a chiral amine ligand in water or a water-containing solvent mixture at a pH of from 8.5 to 13.
摘要:
In a first ADD-DROP module, a WDM signal is supplied to a first filter arrangement which selects two channels and supplies the remaining channels to a cascading switching device. The channels selected by the first filter device can be dropped by an ADD-DROP switching device or switched through the module. The ADD channels switched through or newly added are combined with the remaining channels in an ADD filter arrangement to form a newly configured WDM output signal. A further ADD-DROP module (M2) which allows two further channels to be dropped and added can be connected, in turn, via cascading terminals.