C07C67/44

PROCESS FOR PREPARING ESTERS OF LACTIC ACID, AND 2-HYDROXY-3-BUTENOIC ACID OR ALPHA-HYDROXY METHIONINE ANALOGUES FROM SUGARS
20170334844 · 2017-11-23 · ·

A continuous flow process for the preparation of one or more esters of lactic acid and 2-hydroxy-3-butenoic acid or α-hydroxy methionine analogues from a sugar in the presence of a solid Lewis acid catalyst and a solvent comprising an organic solvent and water. The invention provides a means for stabilizing a Lewis acid catalyst for use in a continuous reaction process wherein the water is present in an amount of up to or equal to 10 vol. % of the organic solvent.

3′-substituted-abscisic acid derivatives

The invention relates to a novel class of (S)-3′-substituted-abscisic acid derivatives and (±)-3′-substituted-abscisic acid derivatives, and methods of synthesizing the derivatives.

3′-substituted-abscisic acid derivatives

The invention relates to a novel class of (S)-3′-substituted-abscisic acid derivatives and (±)-3′-substituted-abscisic acid derivatives, and methods of synthesizing the derivatives.

OXIDATIVE ESTERIFICATION PROCESS

A process for the preparation of MMA via oxidative esterification in the presence of a catalyst comprising palladium, bismuth, and antimony.

OXIDATIVE ESTERIFICATION PROCESS

A process for the preparation of MMA via oxidative esterification in the presence of a catalyst comprising palladium, bismuth, and antimony.

Dehydration process

A process for preparing dry methacrolein, and a process for producing methyl methacrylate are disclosed.

Dehydration process

A process for preparing dry methacrolein, and a process for producing methyl methacrylate are disclosed.

SPECIFIC DEHYDROGENATION PROCESS (I)
20220194891 · 2022-06-23 ·

The present invention relates to a new dehydrogenation process of specific compounds.

SPECIFIC DEHYDROGENATION PROCESS (I)
20220194891 · 2022-06-23 ·

The present invention relates to a new dehydrogenation process of specific compounds.

Process for purifying methyl methacrylate of low-boiling components

A novel process can be used for purifying methyl methacrylate (MMA) contaminated with low-boiling components by distillation, where the process involves producing MMA by oxidative esterification, and a crude product containing methyl propionate (MP), methyl isobutyrate (MIB), and methacrolein (MAL) as low-boiling components. The process is compatible with MMA produced from C.sub.2-based methacrolein containing the low-boiling components specified.