C07C67/11

Process for producing dimethyl 2,3,5,6-tetrachloro-1,4-benzenedicarboxylate

The present invention provides a process for producing a compound represented by formula (I), comprising the steps of (a) reacting a compound represented by formula (II) with dimethyl sulfate in the presence of an alkali carbonate in a aqueous ketone solvent to obtain the compound represented by formula (I) as a crystalline material, and (b) washing the crystalline material with heated water at 30 to 100° C. and then further washing with an organic solvent at 30 to 80° C.

Process for producing dimethyl 2,3,5,6-tetrachloro-1,4-benzenedicarboxylate

The present invention provides a process for producing a compound represented by formula (I), comprising the steps of (a) reacting a compound represented by formula (II) with dimethyl sulfate in the presence of an alkali carbonate in a aqueous ketone solvent to obtain the compound represented by formula (I) as a crystalline material, and (b) washing the crystalline material with heated water at 30 to 100° C. and then further washing with an organic solvent at 30 to 80° C.

PROCESS FOR PRODUCING DIMETHYL 2,3,5,6-TETRACHLORO-1,4-BENZENEDICARBOXYLATE
20220267244 · 2022-08-25 ·

The present invention provides a process for producing a compound represented by formula (I), comprising the steps of (a) reacting a compound represented by formula (II) with dimethyl sulfate in the presence of an alkali carbonate in a aqueous ketone solvent to obtain the compound represented by formula (I) as a crystalline material, and (b) washing the crystalline material with heated water at 30 to 100° C. and then further washing with an organic solvent at 30 to 80° C.

PROCESS FOR PRODUCING DIMETHYL 2,3,5,6-TETRACHLORO-1,4-BENZENEDICARBOXYLATE
20220267244 · 2022-08-25 ·

The present invention provides a process for producing a compound represented by formula (I), comprising the steps of (a) reacting a compound represented by formula (II) with dimethyl sulfate in the presence of an alkali carbonate in a aqueous ketone solvent to obtain the compound represented by formula (I) as a crystalline material, and (b) washing the crystalline material with heated water at 30 to 100° C. and then further washing with an organic solvent at 30 to 80° C.

Preparation of surfactants via cross-metathesis

The present invention relates to compositions comprising alkene benzenes or alkene benzene sulfonates or alkylbenzenes or alkylbenzene sulfonates; methods for making alkene benzenes or alkene benzene sulfonates or alkylbenzenes or alkylbenzene sulfonates; where the benzene ring is optionally substituted with one or more groups designated R*, where R* is defined herein. More particularly, the present invention relates to compositions comprising 2-phenyl linear alkene benzenes or 2-phenyl linear alkene benzene sulfonates or 2-phenyl linear alkylbenzenes or 2-phenyl linear alkylbenzene sulfonates; methods for making 2-phenyl alkene benzenes or 2-phenyl alkene benzene sulfonates or 2-phenyl alkylbenzenes or 2-phenyl alkylbenzene sulfonates; where the benzene ring is optionally substituted with one or more groups designated R*, where R* is defined herein. This invention also relates to compositions, methods of making, use of, and articles of manufacture comprising 2-ethoxylated hydroxymethylphenyl linear alkyl benzenes. This invention also relates to compositions, methods of making, use of, and articles of manufacture comprising 2-propoxylated hydroxymethylphenyl linear alkyl benzenes.

Preparation of surfactants via cross-metathesis

The present invention relates to compositions comprising alkene benzenes or alkene benzene sulfonates or alkylbenzenes or alkylbenzene sulfonates; methods for making alkene benzenes or alkene benzene sulfonates or alkylbenzenes or alkylbenzene sulfonates; where the benzene ring is optionally substituted with one or more groups designated R*, where R* is defined herein. More particularly, the present invention relates to compositions comprising 2-phenyl linear alkene benzenes or 2-phenyl linear alkene benzene sulfonates or 2-phenyl linear alkylbenzenes or 2-phenyl linear alkylbenzene sulfonates; methods for making 2-phenyl alkene benzenes or 2-phenyl alkene benzene sulfonates or 2-phenyl alkylbenzenes or 2-phenyl alkylbenzene sulfonates; where the benzene ring is optionally substituted with one or more groups designated R*, where R* is defined herein. This invention also relates to compositions, methods of making, use of, and articles of manufacture comprising 2-ethoxylated hydroxymethylphenyl linear alkyl benzenes. This invention also relates to compositions, methods of making, use of, and articles of manufacture comprising 2-propoxylated hydroxymethylphenyl linear alkyl benzenes.

Preparation of surfactants via cross-metathesis

The present invention relates to compositions comprising alkene benzenes or alkene benzene sulfonates or alkylbenzenes or alkylbenzene sulfonates; methods for making alkene benzenes or alkene benzene sulfonates or alkylbenzenes or alkylbenzene sulfonates; where the benzene ring is optionally substituted with one or more groups designated R*, where R* is defined herein. More particularly, the present invention relates to compositions comprising 2-phenyl linear alkene benzenes or 2-phenyl linear alkene benzene sulfonates or 2-phenyl linear alkylbenzenes or 2-phenyl linear alkylbenzene sulfonates; methods for making 2-phenyl alkene benzenes or 2-phenyl alkene benzene sulfonates or 2-phenyl alkylbenzenes or 2-phenyl alkylbenzene sulfonates; where the benzene ring is optionally substituted with one or more groups designated R*, where R* is defined herein. This invention also relates to compositions, methods of making, use of, and articles of manufacture comprising 2-ethoxylated hydroxymethylphenyl linear alkyl benzenes. This invention also relates to compositions, methods of making, use of, and articles of manufacture comprising 2-propoxylated hydroxymethylphenyl linear alkyl benzenes.

PEROVSKITES FOR PHOTOCATALYTIC ORGANIC SYNTHESIS
20210402380 · 2021-12-30 · ·

Nature is capable of storing solar energy in chemical bonds via photosynthesis through a series of C—C, C—O and C—N bond-forming reactions starting from CO.sub.2 and light. Direct capture of solar energy for organic synthesis is a promising approach. Lead (Pb)-halide perovskite solar cells reach 24.2% power conversion efficiency, rendering perovskite a unique type material for solar energy capture. We show that photophysical properties of perovskites is useful in photoredox organic synthesis. Because the key aspects of these two applications are both relying on charge separation and transfer. Here we demonstrated that perovskites nanocrystals are exceptional candidates as photocatalysts for fundamental organic reactions, i.e. C—C, C—N and C—O bond-formations. Stability of CsPbBr.sub.3 in organic solvents and ease-of-tuning their bandedges garner perovskite a wider scope of organic substrate activations.

PEROVSKITES FOR PHOTOCATALYTIC ORGANIC SYNTHESIS
20210402380 · 2021-12-30 · ·

Nature is capable of storing solar energy in chemical bonds via photosynthesis through a series of C—C, C—O and C—N bond-forming reactions starting from CO.sub.2 and light. Direct capture of solar energy for organic synthesis is a promising approach. Lead (Pb)-halide perovskite solar cells reach 24.2% power conversion efficiency, rendering perovskite a unique type material for solar energy capture. We show that photophysical properties of perovskites is useful in photoredox organic synthesis. Because the key aspects of these two applications are both relying on charge separation and transfer. Here we demonstrated that perovskites nanocrystals are exceptional candidates as photocatalysts for fundamental organic reactions, i.e. C—C, C—N and C—O bond-formations. Stability of CsPbBr.sub.3 in organic solvents and ease-of-tuning their bandedges garner perovskite a wider scope of organic substrate activations.

Haloalkenyl alkoxymethyl ether compound and a process for preparing a terminal conjugated alkadien-1-yl acetate compound and a terminal conjugated alkadien-1-ol compound therefrom

The present invention relates to a haloalkenyl alkoxymethyl ether compound of the following general formula (1): R.sup.1CH.sub.2OCH.sub.2OCH.sub.2CH.sub.2CH═CH(CH.sub.2).sub.aX.sup.1 (1) wherein R.sup.1 represents a hydrogen atom, an n-alkyl group having 1 to 9 carbon atoms, or a phenyl group, X.sup.1 represents a halogen atom, and “a” represents an integer of 3 to 14. The present invention also relates to processes for preparing a terminal conjugated alkadien-1-yl acetate compound of the following general formula (5): CH.sub.2═CHCH═CH(CH.sub.2).sub.aOAc (5) wherein “a” is as defined above, and Ac represents an acetyl group, and a terminal conjugated alkadien-1-ol compound of the following general formula (6): CH.sub.2═CHCH═CH(CH.sub.2).sub.aOH (6) wherein “a” is as defined above, from the haloalkenyl alkoxymethyl ether compound (1).