Methods for the production of L-glufosinate (also known as phosphinothricin or (S)-2-amino-4-(hydroxy(methyl)phosphonoyl)butanoic acid) are provided. The methods comprise a two-step process. The first step involves the oxidative deamination of D-glufosinate to PPO (2-oxo-4-(hydroxy(methyl)phosphinoyl)butyric acid). The second step involves the specific amination of PPO to L-glufosinate, using an amine group from one or more amine donors. By combining these two reactions, the proportion of L-glufosinate in a mixture of L-glufosinate and D-glufosinate can be substantially increased.

Methods for the production of L-glufosinate (also known as phosphinothricin or (S)-2-amino-4-(hydroxy(methyl)phosphonoyl)butanoic acid) are provided. The methods comprise a two-step process. The first step involves the oxidative deamination of D-glufosinate to PPO (2-oxo-4-(hydroxy(methyl)phosphinoyl)butyric acid). The second step involves the specific amination of PPO to L-glufosinate, using an amine group from one or more amine donors. By combining these two reactions, the proportion of L-glufosinate in a mixture of L-glufosinate and D-glufosinate can be substantially increased.

Methods for the production of L-glufosinate (also known as phosphinothricin or (S)-2 -amino-4-(hydroxy(methyl)phosphonoyl)butanoic acid) are provided. The methods comprise a two-step process. The first step involves the oxidative deamination of D-glufosinate to PPO (2-oxo-4-(hydroxy(methyl)phosphinoyl)butyric acid). The second step involves the specific amination of PPO to L-glufosinate, using an amine group from one or more amine donors. By combining these two reactions, the proportion of L-glufosinate in a mixture of L-glufosinate and D-glufosinate can be substantially increased.

Methods for the production of L-glufosinate (also known as phosphinothricin or (S)-2 -amino-4-(hydroxy(methyl)phosphonoyl)butanoic acid) are provided. The methods comprise a two-step process. The first step involves the oxidative deamination of D-glufosinate to PPO (2-oxo-4-(hydroxy(methyl)phosphinoyl)butyric acid). The second step involves the specific amination of PPO to L-glufosinate, using an amine group from one or more amine donors. By combining these two reactions, the proportion of L-glufosinate in a mixture of L-glufosinate and D-glufosinate can be substantially increased.

The present disclosure relates to an adjuvant composition comprising lecithin; and, an organosilicon surfactant of formula (I):
R.sup.1Si(CH.sub.3).sub.2Z(I)
wherein: R.sup.1 is a branched monovalent hydrocarbon group of from 5 to 8 carbon atoms containing at least two methyl groups; Z is R.sup.2 or R.sup.3; R.sup.2 is CH.sub.2CH.sub.2CH.sub.2OC.sub.2H.sub.4O).sub.a(C.sub.3H.sub.6O).sub.b(C.sub.4H.sub.8O).sub.cR.sup.4 in which R.sup.4 is hydrogen, a linear or branched monovalent hydrocarbon group of from 1 to about 4 carbon atoms or an acyl group, subscript a is from 1 to about 20, subscript b is from 0 to about 19, subscript c is from 0 to about 19 and the sum of subscripts a, b and c is from 1 to about 20; and, R.sup.3 is CH.sub.2CH.sub.2CH.sub.2OCH(OH)CH.sub.2N.sup.+(CH.sub.3).sub.2R.sup.5 [X.sup.] in which R.sup.5 is a linear or branched hydrocarbon group of from 1 to about 4 carbon atoms or an acetyl group and X.sup. is a saturated or unsaturated carboxylate anion of from 2 to about 22 carbon atoms optionally containing 1 or 2 hydroxyl groups.

Provided are methods and compositions to control growth of weed plants. The compositions include an herbicidally effective amount of an herbicidally active chemical compound and a thiocyanate, together with an herbicidally acceptable diluent, carrier or excipient. The thiocyanate preparation can be provided in the form of a glucosinolate hydrolysate obtained from Sinapis alba plant material. Methods of making and using the formulations are also provided.

Provided are methods and compositions to control growth of weed plants. The compositions include an herbicidally effective amount of an herbicidally active chemical compound and a thiocyanate, together with an herbicidally acceptable diluent, carrier or excipient. The thiocyanate preparation can be provided in the form of a glucosinolate hydrolysate obtained from Sinapis alba plant material. Methods of making and using the formulations are also provided.

Methods for the production of L-glufosinate (also known as phosphinothricin or (S)-2-amino-4-(hydroxy(methyl)phosphonoyl)butanoic acid) are provided. The methods comprise a two-step process. The first step involves the oxidative deamination of D-glufosinate to PPO (2-oxo-4-(hydroxy(methyl)phosphinoyl)butyric acid). The second step involves the specific amination of PPO to L-glufosinate, using an amine group from one or more amine donors. By combining these two reactions, the proportion of L-glufosinate in a mixture of L-glufosinate and D-glufosinate can be substantially increased.

Methods for the production of L-glufosinate (also known as phosphinothricin or (S)-2-amino-4-(hydroxy(methyl)phosphonoyl)butanoic acid) are provided. The methods comprise a two-step process. The first step involves the oxidative deamination of D-glufosinate to PPO (2-oxo-4-(hydroxy(methyl)phosphinoyl)butyric acid). The second step involves the specific amination of PPO to L-glufosinate, using an amine group from one or more amine donors. By combining these two reactions, the proportion of L-glufosinate in a mixture of L-glufosinate and D-glufosinate can be substantially increased.

Methods for the production of L-glufosinate (also known as phosphinothricin or (S)-2-amino-4-(hydroxy(methyl)phosphonoyl)butanoic acid) are provided. The methods comprise a two-step process. The first step involves the oxidative deamination of D-glufosinate to PPO (2-oxo-4-(hydroxy(methyl)phosphinoyl)butyric acid). The second step involves the specific amination of PPO to L-glufosinate, using an amine group from one or more amine donors. By combining these two reactions, the proportion of L-glufosinate in a mixture of L-glufosinate and D-glufosinate can be substantially increased.