C07C51/14

A METHOD FOR DIRECTLY CONSTRUCTING HIGHLY OPTICALLY ACTIVE TETRASUBSTITUTED ALLENIC ACID COMPOUNDS
20220064096 · 2022-03-03 · ·

The present invention discloses a method for directly constructing highly optically active tetrasubstituted allenic acid compounds, i.e., a one-step process for directly constructing highly optically active axially chiral tetrasubstituted allenic acid compounds by using tertiary propargyl alcohol, carbon monoxide and water as reactants in an organic solvent in the presence of palladium catalyst, chiral diphosphine ligand, monophosphine ligand and organic phosphoric acid. The method of the present invention has the following advantages: operations are simple, raw materials and reagents are readily available, the reaction conditions are mild, the substrate has high universality, the functional group has good compatibility, and the reaction has high enantioselectivity (90%˜>99% ee). The highly optically active allenic acid compounds obtained by the present invention can be used as an important intermediate to construct γ-butyrolactone compounds containing tetrasubstituted chiral quaternary carbon centers, tetrasubstituted allenic alcohol and other compounds.

A METHOD FOR DIRECTLY CONSTRUCTING HIGHLY OPTICALLY ACTIVE TETRASUBSTITUTED ALLENIC ACID COMPOUNDS
20220064096 · 2022-03-03 · ·

The present invention discloses a method for directly constructing highly optically active tetrasubstituted allenic acid compounds, i.e., a one-step process for directly constructing highly optically active axially chiral tetrasubstituted allenic acid compounds by using tertiary propargyl alcohol, carbon monoxide and water as reactants in an organic solvent in the presence of palladium catalyst, chiral diphosphine ligand, monophosphine ligand and organic phosphoric acid. The method of the present invention has the following advantages: operations are simple, raw materials and reagents are readily available, the reaction conditions are mild, the substrate has high universality, the functional group has good compatibility, and the reaction has high enantioselectivity (90%˜>99% ee). The highly optically active allenic acid compounds obtained by the present invention can be used as an important intermediate to construct γ-butyrolactone compounds containing tetrasubstituted chiral quaternary carbon centers, tetrasubstituted allenic alcohol and other compounds.

A METHOD FOR DIRECTLY CONSTRUCTING HIGHLY OPTICALLY ACTIVE TETRASUBSTITUTED ALLENIC ACID COMPOUNDS
20220064096 · 2022-03-03 · ·

The present invention discloses a method for directly constructing highly optically active tetrasubstituted allenic acid compounds, i.e., a one-step process for directly constructing highly optically active axially chiral tetrasubstituted allenic acid compounds by using tertiary propargyl alcohol, carbon monoxide and water as reactants in an organic solvent in the presence of palladium catalyst, chiral diphosphine ligand, monophosphine ligand and organic phosphoric acid. The method of the present invention has the following advantages: operations are simple, raw materials and reagents are readily available, the reaction conditions are mild, the substrate has high universality, the functional group has good compatibility, and the reaction has high enantioselectivity (90%˜>99% ee). The highly optically active allenic acid compounds obtained by the present invention can be used as an important intermediate to construct γ-butyrolactone compounds containing tetrasubstituted chiral quaternary carbon centers, tetrasubstituted allenic alcohol and other compounds.

METHOD FOR PREPARING 3(4),8(9)-BISFORMYLTRICYCLO[5.2.1.0^2,6]DECANE

A method of preparing 3(4),8(9)-bisformyltricyclo[5.2.1.0.sup.2,6]decane is provided. According to the present invention, 3(4),8(9)-bisformyltricyclo[5.2.1.0.sup.2,6]decane (TCDDA) may be prepared with a high conversion rate and purity without a separate catalyst recovery process.

METHOD FOR PREPARING 3(4),8(9)-BISFORMYLTRICYCLO[5.2.1.0^2,6]DECANE

A method of preparing 3(4),8(9)-bisformyltricyclo[5.2.1.0.sup.2,6]decane is provided. According to the present invention, 3(4),8(9)-bisformyltricyclo[5.2.1.0.sup.2,6]decane (TCDDA) may be prepared with a high conversion rate and purity without a separate catalyst recovery process.

SYSTEMS AND PROCESSES FOR DIRECT CRUDE OIL UPGRADING TO HYDROGEN AND CHEMICALS

Systems and methods for direct crude oil upgrading to hydrogen and chemicals including separating an inlet hydrocarbon stream into a light fraction and a heavy fraction comprising diesel boiling point temperature range material; producing from the light fraction syngas comprising H.sub.2 and CO; reacting the CO produced; producing from the heavy fraction and separating CO.sub.2, polymer grade ethylene, polymer grade propylene, C.sub.4 compounds, cracking products, light cycle oils, and heavy cycle oils; collecting and purifying the CO.sub.2 produced from the heavy fraction; processing the C.sub.4 compounds to produce olefinic oligomerate and paraffinic raffinate; separating the cracking products; oligomerizing a light cut naphtha stream; hydrotreating an aromatic stream; hydrocracking the light cycle oils to produce a monoaromatics product stream; gasifying the heavy cycle oils; reacting the CO produced from gasifying the heavy cycle oils; collecting and purifying the CO.sub.2; and processing and separating produced aromatic compounds into benzene and para-xylene.

SYSTEMS AND PROCESSES FOR DIRECT CRUDE OIL UPGRADING TO HYDROGEN AND CHEMICALS

Systems and methods for direct crude oil upgrading to hydrogen and chemicals including separating an inlet hydrocarbon stream into a light fraction and a heavy fraction comprising diesel boiling point temperature range material; producing from the light fraction syngas comprising H.sub.2 and CO; reacting the CO produced; producing from the heavy fraction and separating CO.sub.2, polymer grade ethylene, polymer grade propylene, C.sub.4 compounds, cracking products, light cycle oils, and heavy cycle oils; collecting and purifying the CO.sub.2 produced from the heavy fraction; processing the C.sub.4 compounds to produce olefinic oligomerate and paraffinic raffinate; separating the cracking products; oligomerizing a light cut naphtha stream; hydrotreating an aromatic stream; hydrocracking the light cycle oils to produce a monoaromatics product stream; gasifying the heavy cycle oils; reacting the CO produced from gasifying the heavy cycle oils; collecting and purifying the CO.sub.2; and processing and separating produced aromatic compounds into benzene and para-xylene.

SYSTEMS AND PROCESSES FOR POLYACRYLIC ACID PRODUCTION
20210108010 · 2021-04-15 ·

Disclosed are systems and methods for the production of polyacrylic acid and superabsorbent polymers from ethylene oxidation to form ethylene oxide. Reacting the ethylene oxide with carbon monoxide to form to beta propiolactone (BPL) or polypropiolactone (PPL), or a combination thereof. An outlet configured to provide a carbonylation stream comprising the BPL or PPL, or a combination thereof and using one or more reactors to convert BPL to acrylic acid or to convert at least some of the BPL to PPL, and then to convert PPL to acrylic acid. An outlet configured to provide a PPL stream to a second reactor tm to convert at least some of the PPL to AA or a third reactor to convert at least some of the PPL to AA. The outlet configured to provide an AA stream to a fourth reactor to convert the AA to polyacrylic acid.

SYSTEMS AND PROCESSES FOR POLYACRYLIC ACID PRODUCTION
20210108010 · 2021-04-15 ·

Disclosed are systems and methods for the production of polyacrylic acid and superabsorbent polymers from ethylene oxidation to form ethylene oxide. Reacting the ethylene oxide with carbon monoxide to form to beta propiolactone (BPL) or polypropiolactone (PPL), or a combination thereof. An outlet configured to provide a carbonylation stream comprising the BPL or PPL, or a combination thereof and using one or more reactors to convert BPL to acrylic acid or to convert at least some of the BPL to PPL, and then to convert PPL to acrylic acid. An outlet configured to provide a PPL stream to a second reactor tm to convert at least some of the PPL to AA or a third reactor to convert at least some of the PPL to AA. The outlet configured to provide an AA stream to a fourth reactor to convert the AA to polyacrylic acid.

Systems and processes for polyacrylic acid production
10822436 · 2020-11-03 · ·

Disclosed are systems and methods for the production of polyacrylic acid and superabsorbent polymers from ethylene oxidation to form ethylene oxide. Reacting the ethylene oxide with carbon monoxide to form to beta propiolactone (BPL) or polypropiolactone (PPL), or a combination thereof. An outlet configured to provide a carbonylation stream comprising the BPL or PPL, or a combination thereof and using one or more reactors to convert BPL to acrylic acid or to convert at least some of the BPL to PPL, and then to convert PPL to acrylic acid. An outlet configured to provide a PPL stream to a second reactor tm to convert at least some of the PPL to AA or a third reactor to convert at least some of the PPL to AA. The outlet configured to provide an AA stream to a fourth reactor to convert the AA to polyacrylic acid.