The invention relates to a process for preparing of phenyl carbamate derivatives useful in the treatment of CNS (central nervous system) disorders and representing compounds of formula (1): which process comprises carbamating, by reacting it with chlorosulfonyl isocyanate, a compound of formula (6): wherein X each independently is selected from halogens, n is an integer of 1-5, * denotes a chiral carbon atom, R 1 is linear or branched C 1-10 -alkyl, and the protecting group is one or more selected from trialkyl silyl groups and trialkylaryl silyl groups, wherein each alkyl group independently is linear, branched or cyclic C 1-4 -alkyl groups, and each aryl group independently is C 5-8 -aryl. Furthermore, the invention relates to certain intermediates useful in the above process and to methods for preparing them.
