TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (claimed): Preparation of the compound (Ia) involves preparing the compound (Va) according to the method (p2); and reacting the compound (Va) in the presence of tetra-n-butylammonium fluoride (TBAF) and further proceeding this reaction substantially in the absence of compounds (Vb) and (Ib). Preparation of the compound (Ib) involves preparing the compound (Vb) according to the method (p3); and reacting the compound (Vb) in the presence of TBAF and further proceeding this reaction substantially in the absence of compounds (Va) and (Ia). Preparation of the compound (IIIa) involves reacting the compound (Ia) with aldehyde compound of formula R2-C(O)-R3 and further proceeding this reaction substantially in the absence of compound (Ib). Preparation of the compound (IIIb) involves reacting the compound (Ib) with aldehyde compound of formula R2-C(O)-R3 and further proceeding this reaction substantially in the absence of compound (Ia). Preferred Method: The reaction of the step (a1) proceeds in the absence of compounds (1S,2R)-1-((3,5-di-tert-butyl-2-hydroxybenzylidene)amino)-2-indanol and (VIb). The reaction of step (b1) proceeds in the absence of compounds (VIb) and (Vb). The reaction of the step (a2) proceeds in the absence of compounds (1R,2S)-1-((3,5-di-tert-butyl-2-hydroxybenzylidene)amino)-2-indanol and (VIa). The reaction of step (b2) proceeds in the absence of compounds (VIa) and (Va). Preferred Components: The alkali halide is NaI. Preferred Definitions:    R1=furanyl, pyridinyl, phenyl, biphenyl, naphthyl, H, methyl, or isopropyl preferably methyl or isopropyl);    R1a=H;    R2a=phenyl, 1-napthyl, 2-methyl-phenyl, 4-methyl-phenyl, trans-phenyl-CH=CH-, 2-furyl, isobutyl, cyclohexyl, or -C(O)OCH2CH3;    R3a=H or methyl.    SPECIFIC COMPOUNDS - 3 Compounds are disclosed as the 2-arylpropyl-2-sulfinamide compounds, i.e. (R)-2-phenyl-propane-2-sulfinamide (IA), (S)-2-phenylpropane-2-sulfinamide, (R)-2-p-tolylpropane-2-sulfinamide, and (R)-2-(4-isopropylphenyl)propane-2-sulfinamide. 10 Compounds are disclosed as the N-2-arylpropyl-2-sulfinylimine compounds, e.g. 2-phenyl-propane-2-sulfinic acid 1-phenyl-meth-(E)-ylideneamide (IIIA), 2-phenyl-propane-2-sulfinic acid 1-o-tolyl-meth-(E)-ylideneamide, 2-phenyl-propane-2-sulfinic acid 1-cyclohexyl-meth-(E)-ylideneamide, ((E)-(R)-2-phenyl-propane-2-sulfinylimino)-acetic acid ethyl ester, and 2-p-Tolyl-propane-2-sulfinic acid 1-phenyl-meth-(E)-ylideneamide.    EXAMPLE - Freshly synthesized 1M solution of 35.1 ml tert-butyl-dimethyl-silane (TBDMS)-NH2 in tetrahydrofuran (THF) was taken in a dry round bottomed flask under argon. To this solution, 22.0 ml 1.6 M n-BuLi was added drop wise at -78?oC, and the mixture was stirred at the same temperature. After 30 minutes the pre dissolved solution of 2.8 g (R)-S-2-phenylpropan-2-yl 2-phenylpropane-2-sulfinothioate in THF was added slowly at -78?oC. The reaction temperature raised to room temperature slowly, and stirred until the starting material consumed, monitored by TLC. At this stage, reaction quenched with 1 ml aq. NH4Cl solution, and extracted with ethyl acetate. The organic layer was dried over anhydrous Na2SO4, and evaporated under reduced pressure to afford crude product. The crude product was purified by column chromatography to obtain 2.45 g, 93% yield of (R)-N-(tert-butyldimethylsilyl)-2-phenylpropane-2-sulfinamide (A1) as white solid with 94% enantiomeric excess. A dry round bottom flask was charged with 1.32 g the sulfinamide (A1), and 23 ml THF under argon and was added 5.33 ml tetra-n-butylammonium fluoride (TBAF) at 0?oC. After 1 hour, TLC indicated that all starting material was consumed. Then the reaction was quenched with 1 ml water and extracted with ethyl acetate. The organic layer was dried over anhydrous Na2SO4, and evaporated under reduced pressure to afford crude sulfonamide. The crude product was purified by column chromatography with ethyl acetate as eluent to obtain pure 0.8 g, 98% yield of (R)-2-phenyl-propane-2-sulfinamide with 94% enantiomeric excess.