Patent classifications
C07C67/44
PROCESS FOR PREPARING ESTERS OF LACTIC ACID, AND 2-HYDROXY-3-BUTENOIC ACID OR ALPHA-HYDROXY METHIONINE ANALOGUES FROM SUGARS
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)
The present invention relates to a new dehydrogenation process of specific compounds.
SPECIFIC DEHYDROGENATION PROCESS (I)
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.