- Process for manufacturing N-benzyl-N-isopropyl amides
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In the manufacture of an N-benzyl-N-isopropyl amide by reaction of N-benzyl-N-isopropylamine with an acid chloride, the amide product is obtained in better purity and yield by employing excess benzylisopropylamine as the acid accepting agent and recovering the amine for re-use by reacting the amine hydrochloride by-product with aqueous sodium hydroxide.
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- Pre-emergent chemical method of combating unwanted vegetation
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Undesired vegetation such as crabgrass, downey brome, giant foxtail, yellow foxtail, barnyard grass, flax and wild oats are combated by pre-emergent application of at least one compound belonging to a class of substituted N-benzyl amides of alkanoic and benzoic acids, particularly in the presence of seeds of such crops as cotton and soybeans. Illustrative of compounds which are very effective against several species of grasses as well as some broadleaf weeds in the presence of soybeans and cotton are two with the following structural formulas: EQU1 and EQU2
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