A method to isolate acid 2 - (P - difluormetoxifenil metilbutirico) - 3 - Dextro Rotating.

摘要

Procedure to isolate acid 2 - (P - difluormetoxifenil metilbutirico) - 3 - Dextro Rotating.Comprising: (a) contacting a molar equivalent of acid 2 - (P - difluorometoxifenil metilbutirico) - 3 - with an optically Active and Racemic Amine with a base inorganic Soluble in water, in the presence of a mixture of water and Inert Organic Solvent; (b) heating the mixture to a temperartur) Between 40jc and 100jc and long enough,To form the optically Active acid Amine sa (c) to isolate the Salt from the rest of the Reaction mixture; and (d) to decompose the mineral acid with salt to regenerate acid Dextro rotating it.The Organic Solvent is benzene, toluene and other Inert, optically Active Amine is (c) - phenethylamine (b) and (c) - 2 - amino - 1 - butanol and other inorganic soluble; the base is chosen between carbonates and hydroxides of alkali Metals and mineral acid is used as a pesticide or so4h2.se CLH.