Abstract: Solid forms of L-glufosinate materials, including crystalline L-glufosinate ammonium, are described.

Abstract: Solid forms of L-glufosinate materials, including crystalline L-glufosinate ammonium, are described.

Abstract: Compositions and methods for isolating L-glufosinate from a composition comprising L-glufosinate and glutamate are provided. The method comprises converting the glutamate to pyroglutamate followed by the isolation of L-glufosinate from the pyroglutamate and other components of the composition to obtain substantially purified L-glufosinate. The composition comprising L-glufosinate and glutamate is subjected to an elevated temperature for a sufficient time to allow for the conversion of glutamate to pyroglutamate, followed by the isolation of L-glufosinate from the pyroglutamate and other components of the composition to obtain substantially purified L-glufosinate. The glutamate alternatively may be converted to pyroglutamate by enzymatic conversion. The purified L-glufosinate is present in a final composition at a concentration of 90% or greater of the sum of L-glufosinate, glutamate, and pyroglutamate.

Abstract: Compositions and methods for isolating L-glufosinate from a composition comprising L-glufosinate and glutamate are provided. The method comprises converting the glutamate to pyroglutamate followed by the isolation of L-glufosinate from the pyroglutamate and other components of the composition to obtain substantially purified L-glufosinate. The composition comprising L-glufosinate and glutamate is subjected to an elevated temperature for a sufficient time to allow for the conversion of glutamate to pyroglutamate, followed by the isolation of L-glufosinate from the pyroglutamate and other components of the composition to obtain substantially purified L-glufosinate. The glutamate alternatively may be converted to pyroglutamate by enzymatic conversion. The purified L-glufosinate is present in a final composition at a concentration of 90% or greater of the sum of L-glufosinate, glutamate, and pyroglutamate.

Abstract: Compositions and methods for isolating L-glufosinate from a composition comprising L-glufosinate and glutamate are provided. The method comprises converting the glutamate to pyroglutamate followed by the isolation of L-glufosinate from the pyroglutamate and other components of the composition to obtain substantially purified L-glufosinate. The composition comprising L-glufosinate and glutamate is subjected to an elevated temperature for a sufficient time to allow for the conversion of glutamate to pyroglutamate, followed by the isolation of L-glufosinate from the pyroglutamate and other components of the composition to obtain substantially purified L-glufosinate. The glutamate alternatively may be converted to pyroglutamate by enzymatic conversion. The purified L-glufosinate is present in a final composition at a concentration of 90% or greater of the sum of L-glufosinate, glutamate, and pyroglutamate.

Abstract: Compositions and methods for isolating L-glufosinate from a composition comprising L-glufosinate and glutamate are provided. The method comprises converting the glutamate to pyroglutamate followed by the isolation of L-glufosinate from the pyroglutamate and other components of the composition to obtain substantially purified L-glufosinate. The composition comprising L-glufosinate and glutamate is subjected to an elevated temperature for a sufficient time to allow for the conversion of glutamate to pyroglutamate, followed by the isolation of L-glufosinate from the pyroglutamate and other components of the composition to obtain substantially purified L-glufosinate. The glutamate alternatively may be converted to pyroglutamate by enzymatic conversion. The purified L-glufosinate is present in a final composition at a concentration of 90% or greater of the sum of L-glufosinate, glutamate, and pyroglutamate.

Abstract: Compositions and methods for isolating L-glufosinate from a composition comprising L-glufosinate and glutamate are provided. The method comprises converting the glutamate to pyroglutamate followed by the isolation of L-glufosinate from the pyroglutamate and other components of the composition to obtain substantially purified L-glufosinate. The composition comprising L-glufosinate and glutamate is subjected to an elevated temperature for a sufficient time to allow for the conversion of glutamate to pyroglutamate, followed by the isolation of L-glufosinate from the pyroglutamate and other components of the composition to obtain substantially purified L-glufosinate. The glutamate alternatively may be converted to pyroglutamate by enzymatic conversion. The purified L-glufosinate is present in a final composition at a concentration of 90% or greater of the sum of L-glufosinate, glutamate, and pyroglutamate.

Abstract: 4-Amino-6-(heterocyclic)picolinic acids and their derivatives; 6-amino-2-(heterocyclic)pyrimidine-4-carboxylates and their derivatives; and methods of using the same as herbicides.

Abstract: 4-Amino-6-(heterocyclic)picolinic acids and their derivatives; 6-amino-2-(heterocyclic)pyrimidine-4-carboxylates and their derivatives; and methods of using the same as herbicides.

Abstract: 4-Amino-6-(heterocyclic)picolinic acids and their derivatives; 6-amino-2-(heterocyclic)pyrimidine-4-carboxylates and their derivatives; and methods of using the same as herbicides.

Abstract: 4-Amino-6-(heterocyclic)picolinic acids and their derivatives; 6-amino-2-(heterocyclic)pyrimidine-4-carboxylates and their derivatives; and methods of using the same as herbicides.

Abstract: Disclosed is a method of chlorinating a carbohydrate or derivative thereof, for example, a sucrose-6-ester at the 4,1?, and 6? positions, with irreversible removal of HCl formed during the reaction to form the chlorinated carbohydrate or derivative thereof, for example, a 4,1?,6?-trichloro-4,1?,6?-trideoxy-6-O-ester of galactosucrose (TGS-6E). The irreversible removal of HCl can be carried out by an irreversible physical process and/or an irreversible chemical process. Sucralose, an artificial sweetener, can be prepared by deesterification of the TGS-6E. The chlorination reaction takes place at low temperatures and the desired chlorinated product is obtained in high yields and in high purities.

Abstract: 4-Amino-6-(heterocyclic)picolinic acids and their derivatives; 6-amino-2-(heterocyclic)pyrimidine-4-carboxylates and their derivatives; and methods of using the same as herbicides.

Abstract: 4-Amino-6-(heterocyclic)picolinic acids and their derivatives; 6-amino-2-(heterocyclic)pyrimidine-4-carboxylates and their derivatives; and methods of using the same as herbicides.

Abstract: 4-Amino-6-(heterocyclic)picolinic acids and their derivatives; 6-amino-2-(heterocyclic)pyrimidine-4-carboxylates and their derivatives; and methods of using the same as herbicides.

Abstract: 4-Amino-6-(heterocyclic)picolinic acids and their derivatives; 6-amino-2-(heterocyclic)pyrimidine-4-carboxylates and their derivatives; and methods of using the same as herbicides.

Abstract: 4-Amino-6-(heterocyclic)picolinic acids and their derivatives; 6-amino-2-(heterocyclic)pyrimidine-4-carboxylates and their derivatives; and methods of using the same as herbicides.

Abstract: Disclosed is a method of chlorinating a carbohydrate or derivative thereof, for example, a sucrose-6-ester at the 4,1?, and 6? positions, with irreversible removal of HCl formed during the reaction to form the chlorinated carbohydrate or derivative thereof, for example, a 4,1?,6?-trichloro-4,1?,6?-trideoxy-6-O-ester of galactosucrose (TGS-6E). The irreversible removal of HCl can be carried out by an irreversible physical process and/or an irreversible chemical process. Sucralose, an artificial sweetener, can be prepared by deesterification of the TGS-6E. The chlorination reaction takes place at low temperatures and the desired chlorinated product is obtained in high yields and in high purities.

Abstract: Disclosed is a method for chlorinating a carbohydrate or a derivative thereof to produce a polychlorinated carbohydrate or a derivative thereof, such as sucralose, the method involves (i) reacting the carbohydrate or derivative thereof with a chlorinating agent to obtain a reaction mixture comprising said polychlorinated carbohydrate or derivative thereof and at least one under-chlorinated carbohydrate or derivative thereof, (ii) returning the at least one under-chlorinated carbohydrate or derivative thereof to a chlorinating step and further chlorinating the at least one under-chlorinated carbohydrate or derivative thereof to obtain the desired polychlorinated carbohydrate or derivative thereof; and (iii) optionally repeating steps (i) and (ii) “n” times where n?1. The polychlorinated carbohydrate or a derivative thereof is obtained in high yields.

Abstract: Disclosed is a method of chlorinating a carbohydrate or derivative thereof, for example, a sucrose-6-ester at the 4,1?, and 6? positions, with irreversible removal of HCl formed during the reaction to form the chlorinated carbohydrate or derivative thereof, for example, a 4,1?,6?-trichloro-4,1?,6?-trideoxy-6-O-ester of galactosucrose (TGS-6E). The irreversible removal of HCl can be carried out by an irreversible physical process and/or an irreversible chemical process. Sucralose, an artificial sweetener, can be prepared by deesterification of the TGS-6E. The chlorination reaction takes place at low temperatures and the desired chlorinated product is obtained in high yields and in high purities.