Patent classifications
C07C67/52
PROCESS FOR THE MANUFACTURE OF ALKYLFLUOROACRYLATE
The invention relates to a process for the manufacture of an alkylfluoroacrylate starting from alkylfluoroacetate and an oxalic acid ester, wherein an alkane liquid under the reaction conditions is applied as the solvent in one of the reaction steps.
PROCESS FOR THE MANUFACTURE OF ALKYLFLUOROACRYLATE
The invention relates to a process for the manufacture of an alkylfluoroacrylate starting from alkylfluoroacetate and an oxalic acid ester, wherein an alkane liquid under the reaction conditions is applied as the solvent in one of the reaction steps.
PROCESS FOR THE MANUFACTURE OF ALKYLFLUOROACRYLATE
The invention relates to a process for the manufacture of an alkylfluoroacrylate starting from alkylfluoroacetate and an oxalic acid ester, wherein an alkane liquid under the reaction conditions is applied as the solvent in one of the reaction steps.
SOLUBIZATION OF RESVERATROL GLYCOLATE AND TARTRATE DERIVATIVES
A method or process for solubilizing a resveratrol glycolate compound by heating the resveratrol glycolate and mixing the resveratrol glycolate with one or more glycols is disclosed.
SOLUBIZATION OF RESVERATROL GLYCOLATE AND TARTRATE DERIVATIVES
A method or process for solubilizing a resveratrol glycolate compound by heating the resveratrol glycolate and mixing the resveratrol glycolate with one or more glycols is disclosed.
Hexadecyl Treprostinil crystals and methods for preparation thereof
There is provided stable crystalline Form I and Form II of Hexadecyl Treprostinil (C.sub.16TR) and processes for the preparation thereof. The stable crystalline Form I and Form II of Hexadecyl Treprostinil present advantages in storage, formulation, shipment and handling for commercially considerations.
Hexadecyl Treprostinil crystals and methods for preparation thereof
There is provided stable crystalline Form I and Form II of Hexadecyl Treprostinil (C.sub.16TR) and processes for the preparation thereof. The stable crystalline Form I and Form II of Hexadecyl Treprostinil present advantages in storage, formulation, shipment and handling for commercially considerations.
Hexadecyl Treprostinil crystals and methods for preparation thereof
There is provided stable crystalline Form I and Form II of Hexadecyl Treprostinil (C.sub.16TR) and processes for the preparation thereof. The stable crystalline Form I and Form II of Hexadecyl Treprostinil present advantages in storage, formulation, shipment and handling for commercially considerations.
Preparation and Purification of Biphenyldicarboxylic Acids
Processes are described for purifying a biphenyldicarboxylic acid product containing one or more impurities, particularly at least formylbiphenylcarboxylic acid. In the processes, at least a portion of the biphenyldicarboxylic acid product is contacted with an alcohol under conditions effective to esterify at least part of the biphenyldicarboxylic acid and at least part of the formylbiphenylcarboxylic acid and produce an esterification effluent containing biphenyldicarboxylic acid diester and formylbiphenylcarboxylic acid ester. At least part of the biphenyldicarboxylic acid diester is then separated from the esterification effluent by crystallization. Advantageously, a polyester product may be produced from the separated biphenyldicarboxylic acid diester.
Preparation and Purification of Biphenyldicarboxylic Acids
Processes are described for purifying a biphenyldicarboxylic acid product containing one or more impurities, particularly at least formylbiphenylcarboxylic acid. In the processes, at least a portion of the biphenyldicarboxylic acid product is contacted with an alcohol under conditions effective to esterify at least part of the biphenyldicarboxylic acid and at least part of the formylbiphenylcarboxylic acid and produce an esterification effluent containing biphenyldicarboxylic acid diester and formylbiphenylcarboxylic acid ester. At least part of the biphenyldicarboxylic acid diester is then separated from the esterification effluent by crystallization. Advantageously, a polyester product may be produced from the separated biphenyldicarboxylic acid diester.