The present invention relates to a new process for preparing 3-chloro-2-vinylphenylsulfonate derivatives.

The present invention relates to a new process for preparing 3-chloro-2-vinylphenylsulfonate derivatives.

Provided is a synthesis method comprising a first step of producing a carbonate compound from carbon monoxide and an alcohol-based compound at an anode of a first electrochemical cell comprising a cathode and the anode, and a second step of synthesizing a first product by a dealcoholization reaction of the carbonate compound, wherein an alcohol-based compound eliminated in the second step is recycled in the first step.

Provided is a synthesis method comprising a first step of producing a carbonate compound from carbon monoxide and an alcohol-based compound at an anode of a first electrochemical cell comprising a cathode and the anode, and a second step of synthesizing a first product by a dealcoholization reaction of the carbonate compound, wherein an alcohol-based compound eliminated in the second step is recycled in the first step.

The invention relates to synthesis of methyl carbamate (MC) and dimethyl carbonate (DMC) in presence of stripping inert gas or superheated methanol vapors using packed column reactor and bubble column reactor.

The invention relates to synthesis of methyl carbamate (MC) and dimethyl carbonate (DMC) in presence of stripping inert gas or superheated methanol vapors using packed column reactor and bubble column reactor.

Provided herein are methods of altering enantiomeric excess. The methods may include irradiating an atropisomer that includes at least one chiral substituent to alter the enantiomeric excess of the atropisomer. The at least one chiral substituent may be removed following irradiation.

Provided herein are methods of altering enantiomeric excess. The methods may include irradiating an atropisomer that includes at least one chiral substituent to alter the enantiomeric excess of the atropisomer. The at least one chiral substituent may be removed following irradiation.

A method of producing a diaryl carbonate, comprising: performing both a transesterification reaction and a disproportionation reaction within a reactive distillation column by introducing a feed stream comprising a dialkyl carbonate to the reactive distillation column at a point above a reboiler, and introducing an aromatic hydroxyl compound to the reactive distillation column; producing a diaryl carbonate, within the reactive distillation column; and withdrawing a bottom product stream comprising the diaryl carbonate from the reactive distillation column, preferably the diaryl carbonate has a purity of greater than or equal to 99.97 wt %.

A method of producing a diaryl carbonate, comprising: performing both a transesterification reaction and a disproportionation reaction within a reactive distillation column by introducing a feed stream comprising a dialkyl carbonate to the reactive distillation column at a point above a reboiler, and introducing an aromatic hydroxyl compound to the reactive distillation column; producing a diaryl carbonate, within the reactive distillation column; and withdrawing a bottom product stream comprising the diaryl carbonate from the reactive distillation column, preferably the diaryl carbonate has a purity of greater than or equal to 99.97 wt %.