The patent discloses a process for the synthesis of dialkyl carbonates catalyzed by a catalyst composition AB oxides, wherein A and B are rare earth metals or A and B are combination of rare earth and transition metals with ratios ranging from 0.5:10 to 10:0.5.

The patent discloses a process for the synthesis of dialkyl carbonates catalyzed by a catalyst composition AB oxides, wherein A and B are rare earth metals or A and B are combination of rare earth and transition metals with ratios ranging from 0.5:10 to 10:0.5.

The patent discloses a process for the synthesis of dialkyl carbonates catalyzed by a catalyst composition AB oxides, wherein A and B are rare earth metals or A and B are combination of rare earth and transition metals with ratios ranging from 0.5:10 to 10:0.5.

A process for preparing a silver-containing catalyst for the selective oxidation of ethylene to ethylene oxide including the steps of: (a) providing a multimodal support, (b) preparing an impregnation solution comprising a silver component, (c) impregnating, at least once, the multimodal support of step (a) with the silver-containing impregnation solution of step (b) to form an impregnated support; (d) subjecting the impregnated multimodal support from step (c) to a removal means, such as a centrifuge, at least once, for a time sufficient to remove impregnated silver impregnation solution from the multimodal support and to control the amount of silver in the pores of the multimodal support by selectively removing impregnated silver impregnation solution from a set of larger pores in the multimodal support; (e) roasting, at least once, the multimodal support after the step (d); (f) optionally, repeating the impregnation step (c), (g) optionally, repeating the centrifugation step (d), and (h) optionally, repeating the calcination step (e).

A process for preparing a silver-containing catalyst for the selective oxidation of ethylene to ethylene oxide including the steps of: (a) providing a multimodal support, (b) preparing an impregnation solution comprising a silver component, (c) impregnating, at least once, the multimodal support of step (a) with the silver-containing impregnation solution of step (b) to form an impregnated support; (d) subjecting the impregnated multimodal support from step (c) to a removal means, such as a centrifuge, at least once, for a time sufficient to remove impregnated silver impregnation solution from the multimodal support and to control the amount of silver in the pores of the multimodal support by selectively removing impregnated silver impregnation solution from a set of larger pores in the multimodal support; (e) roasting, at least once, the multimodal support after the step (d); (f) optionally, repeating the impregnation step (c), (g) optionally, repeating the centrifugation step (d), and (h) optionally, repeating the calcination step (e).

The present invention relates to the diastereomeric salts (Va), (Vb), (Vc) and/or (Vd), to a process for preparing the diastereomeric salts (Va), (Vb), (Vc) and/or (Vd) using a chiral substituted tartaric ester of the formula (IIIa) or (IIIb), to a process for preparing the compound of formula (IVa) using the diastereomeric salts (Va), (Vb), (Vc) and/or (Vd), to a process for preparing the compound of the formula (VIIa) using the diastereomeric salts (Va), (Vb), (Vc) and/or (Vd), to a process for preparing the compound of the formula (Ia) using the diastereomeric salts (Va), (Vb), (Vc) and/or (Vd), to the use of the diastereomeric salts (Va), (Vb), (Vc) and/or (Vd) for preparation of one of the compounds of formula (IVa), (VIIa) and/or (Ia), to the use of a chiral substituted tartaric esters of the formula (IIIa) or (IIIb) for preparation of the diastereomeric salts (Va), (Vb), (Vc) and/or (Vd), and to the use of a chiral substituted tartaric ester of the formula (IIIa) or (IIIb) for preparation of one of the compounds of formula (IVa), (VIIa) and/or (Ia).

The present invention relates to the diastereomeric salts (Va), (Vb), (Vc) and/or (Vd), to a process for preparing the diastereomeric salts (Va), (Vb), (Vc) and/or (Vd) using a chiral substituted tartaric ester of the formula (IIIa) or (IIIb), to a process for preparing the compound of formula (IVa) using the diastereomeric salts (Va), (Vb), (Vc) and/or (Vd), to a process for preparing the compound of the formula (VIIa) using the diastereomeric salts (Va), (Vb), (Vc) and/or (Vd), to a process for preparing the compound of the formula (Ia) using the diastereomeric salts (Va), (Vb), (Vc) and/or (Vd), to the use of the diastereomeric salts (Va), (Vb), (Vc) and/or (Vd) for preparation of one of the compounds of formula (IVa), (VIIa) and/or (Ia), to the use of a chiral substituted tartaric esters of the formula (IIIa) or (IIIb) for preparation of the diastereomeric salts (Va), (Vb), (Vc) and/or (Vd), and to the use of a chiral substituted tartaric ester of the formula (IIIa) or (IIIb) for preparation of one of the compounds of formula (IVa), (VIIa) and/or (Ia).

The invention provides a method for producing halogenated carbonates, the method comprising reacting a halogenated alcohol or diol with a solid source of carbonyl moiety as a base in an ether.

The invention provides a method for producing halogenated carbonates, the method comprising reacting a halogenated alcohol or diol with a solid source of carbonyl moiety as a base in an ether.

Methods of converting a fluorinated compound into a fluorinated acyl fluoride or derivative thereof, the method including reacting the fluorinated compound with a catalytic amount of at least one transition metal compound and an oxygen-containing compound to form the fluorinated acyl fluoride or derivative thereof. Compounds formed using such methods are also included, including for example <Insert chemical formulas here as they appear in the electronic copy.> and derivatives thereof, or combinations thereof.

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