TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Method: In the process step-(a) is carried out at -20 to 100 (preferably -10 to 80) degrees C for at least 30 minutes (preferably 30 minutes to 10 hours). In the process step-(b) is carried out at -20 to 100 (preferably -5 to 80) degrees C for at least 30 minutes (preferably 30 minutes to 10 hours). In the process (P2) step-(a) is carried out at -25 to the reflux temperature of the solvent used for at least 30 minutes. Preferred Components: The chloroformate compound (III) selected from methyl chloroformate, ethyl chloroformate, propyl chloroformate, isopropyl chloroformate, butyl chloroformate, isobutyl chloroformate, sec-butyl chloroformate and phenyl chloroformate (preferably ethyl chloroformate or isobutyl chloroformate). In the process (P1) solvents used in step-(a) selected from alcohols, ketones, cyclic ethers, aliphatic ethers, hydrocarbons, chlorinated hydrocarbons, nitriles, and/or esters (preferably methylene chloride, toluene, xylene, n-pentane, n-hexane, n- heptane, and/or cyclohexane). In the process (P1) solvents used in step-(b) selected from alcohols, ketones, cyclic ethers, aliphatic ethers, hydrocarbons, chlorinated hydrocarbons, nitriles, and/or esters (preferably methanol, ethanol, isopropyl alcohol, and/or acetone). In the process (P1) ammonia used in step-(b) is in the form of aqueous ammonia or in the form of ammonia gas dissolved in an organic solvent selected from ethanol, methanol, isopropyl alcohol, ethyl acetate, diethyl ether, dimethyl ether and acetone. In the process (P2) oxidizing agent used in step (a) is selected from 50% hydrogen peroxide, ammonium molybdate/sodium percarbonate, sodium tungstate, sodium per borate, N-halosuccinimide such as N-chlorosuccinimide, vanadium acetylacetonate/tert-butylhydroperoxide, sodium perborate/acetic anhydride, m-chloroperbenzoic acid, chlorite, chlorate, perchlorate, and other analogous halogen compounds, sodium hypochlorite/(-)-( alpha )-methylbenzylamine, salts of pepnanganate, ammonium cerium (IV) nitrate and probably related cerium (IV) compounds, hexavalent chromium compounds such as chromic and dichromic acids and chromium trioxide, pyridiniumchlorochromate (PCC), and chromate/dichromate compounds, Tollen's Reagent, persulfuric acid, osmium tetra oxide (OsO4), selenium dioxide, nitronium hexafluorophosphate, thalium (III) nitrate, nitrogen tetroxide, idosobenzene, iodobenzene diacetate, iodobenzene dichloride, sodium metaperiodate, tert-butylhypochlorite, 1-halobenzotriazoles, sulfurylchloride, 2,4,4,6-tetrabromocyclohexa-dienone, and/or lead tetra acetate (preferably 50% hydrogen peroxide, N-chlorosuccinimide, sodium hypochlorite/(-)-( alpha )-methylbenzylamine, ammonium molybdate/sodium percarbonate, vanadium acetylacetonate/tert-butylhydroperoxide,and/or sodium perborate/acetic anhydride). In the process (P2) first solvent used in step-(a) is selected from water, alcohols, ketones, cyclic ethers, aliphatic ethers, hydrocarbons, chlorinated hydrocarbons, nitriles, and/or esters (preferably water, methanol, ethanol, isopropanol, toluene, xylene, n-pentane, n-hexane, n- heptane, and/or cyclohexane); and the second solvent used in step-(b) is selected from water, alcohols, and/or hydrocarbons (preferably water, methanol, ethanol, isopropanol, toluene, xylene, n-pentane, n-hexane, n- heptane, and/or cyclohexane; especially water, methanol, and/or toluene). In the process (P2) the oxidizing agent is employed in a molar ratio of 0.5-3 (preferably 1.5-2) equivalents per one equivalent of 2-((diphenylmethyl)thio) acetic acid. In the process (P2) the acid used in step (c) is selected from acetic acid, sulfuric acid, hydrochloric acid, aliphatic sulfonic acid, arylsulfonic acid, hydrobromic acid, and/or phosphoric acid. Preferred Definitions:    R1=methyl, ethyl, n-propyl, iso-propyl, n-butyl, iso-butyl, t-butyl, n-pentyl, benzyl, 2-phenethyl, naphthalenemethyl, phenyl or naphthyl.    ACTIVITY - Antidepressant; CNS-Gen.; Sedative. No biological data is given.    MECHANISM OF ACTION - alpha -Adrenergic agonist.    EXAMPLE - Dichloromethane (165 g) was added to (-)-2-(R)-((diphenylmethyl)sulfinyl) acetic acid (22 g) at 25-30 degrees C and the resulting slurry was cooled at 5-15 degrees C followed by addition of triethyl amine (11.352 g) at 5-15 degrees C for 30 minutes. The reaction flask was rinsed with dichloromethane (11 g) and transferred to the reaction assembly. To the resulting mass was added isobutyl chloroformate (14.30 g) over period of 60 minutes maintaining temperature between 0-10 degrees C followed rinsing of charging system with dichloromethane (11 g) and transferring to the reaction assembly. The resulting mass was further stirred for 15 minutes at 5-10 degrees C. The mass temperature was increased to 10-15 degrees C followed by stirring for further 60 minutes at 10-15 degrees C. Further reaction mass was brought to 20-25 degrees C and stirred 1 hour at same temperature. Purified water (66 g) was added to the resulting mass followed by stirring for 10 minutes at 20-25 degrees C. The resulting layers were separated and aqueous layer was further extracted. The organic layers were combined and aqueous layer was discarded. The organic layer was washed. The dichloromethane was distilled and degassed. This was followed by the addition of methanolic ammonia solution (23 wt.%/wt.%) at 15-25 degrees C and increased temperature to 25-30 degrees C. The resulting mass was further stirred for 6 hours at 25-30 degrees C. The reaction was followed by the addition of purified water (110 g) over period of 30-40 minutes at 25-30 degrees C followed by 15 minutes stirring at same temperature. Further mass was cooled to 5-10 degrees C followed by stirring for 2 hours at same temperature. The precipitated product was collected and dried. Further wet cake was washed and dried to give armodafinil (18.25 g, yield: 83.50%, purity of 99.66%).