Reference

Gas-chromatographic determination of the composition of impurities in wastewater and regenerated water during synthesis of polystyrene plastics with a closed water recycling system

Gas-chromatographic determination of the composition of impurities in wastewater and regenerated water during synthesis of polystyrene plastics with a closed water recycling system. Ulinskaya, N. N.; Kleshcheva, M. S. (USSR). 65-85-0 and 100-42-5 are cas registry numbers. These chemicals are also mentioned in this article. Plast. Massy, (4), 49-50 (Russian) 1984. CODEN: PLMSAI. ISSN: 0554-2901. DOCUMENT TYPE: Journal CA Section: 60 (Waste Treatment and Disposal) Section cross-reference(s): 37, 61 The concn. of acrylonitrile [107-13-1], Me methacrylate [80-62-6], styrene [100-42-5] and other monomers in the wastewater from polystyrene [9003-53-6] prodn. varied with the type and purity of the peroxide polymn. initiator. The purity of the initial monomer, the completeness of polymn., and the formation of by products, e.g., ethylphenylketone [93-55-0], also affected wastewater compn. Data obtained by gas chromatog. anal. ofr wastewaters before and after treatment are useful in selecting the most efficient treatment method and detg. the possible reuse of treated water in recycled water systems. .

S-Chiral Sulfinamides as Highly Enantioselective Organocatalysts

Pei, Dong; Wang, Zhouyu; Wei, Siyu; Zhang, Yu; Sun, Jian (Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, Peop. Rep. China). Organic Letters, 8(25), 5913-5915 (English) 2006 American Chemical Society. CODEN: ORLEF7. ISSN: 1523-7060. DOCUMENT TYPE: Journal CA Section: 25 (Benzene, Its Derivatives, and Condensed Benzenoid Compounds) Easily accessible chiral sulfinamide I has been developed as the first highly efficient and enantioselective organocatalyst relying solely on a chiral sulfur center for stereochem. induction. In the presence of 20 mol % of I, a broad range of N-aryl ketimines, e.g., II, were reduced by trichlorosilane to produce the corresponding amines in high yield and enantioselectivity.Except for chemicals metioned above, 25287-39-2 and 93-55-0 are also used. .