Abstract: The invention relates to a process for the preparation of D-(-)-phenylglycine chloride hydrochloride by chlorinating D-(-)-phenylglycine hydrochloride, which as such is prepared in situ from D-(-)-phenylglycine and hydrochloric acid gas, in a solvent. According to the invention chlorination of the hydrochloride is carried out in a non-chlorinated solvent or a mixture of non-chlorinated solvents in the presence of a reaction promoting medium.Chlorination is carried out through the addition of PCl.sub.5, but preferably the PCl.sub.5 is prepared in situ from PCl.sub.3 and Cl.sub.2 gas.

Abstract: The invention relates to a process for the preparation of S(+)-6-methoxy-.alpha.-methyl-2-naphthalene-acetic acid by resolution of R,S-6-methoxy-.alpha.-methyl-2-naphthalene-acetic acid. According to the invention R,S-6-methoxy-.alpha.-methyl-2-naphthalene-acetic acid and R(-)-2-amino-1-butanol are dissolved in water at 40.degree.-60.degree. C. Then the solution thus obtained is cooled to 25.degree.-35.degree. C. Subsequently the obtained solution is grafted with a salt of S(+)-6-methoxy-.alpha.-methyl-2-naphthalene-acetic acid and R(-)-2-amino-1-butanol, further it is cooled to 5.degree.-15.degree. C. The thereby formed crystals are separated from the solution and washed with water and subsequently hydrolyzed by adding a strong acid, whereby S(+)-6-methoxy-.alpha.-methyl-2-naphthalene-acetic acid crystallizes and the obtained crystals are separated from the mother liquor and the R(-)-6-methoxy-.alpha.