Opening of the cephalosporin dihydrothiazine ring.
نویسندگان
چکیده
منابع مشابه
Synthesis of Polysiloxanes In Microemulsion Via ring opening of D4
Polydimethylsiloxane (PDMS) has been synthesized by ring-opening polymerization of octamethylcyclotetrasiloxane (D4) in microemulsion with acidic catalyst. The structure and properties of microemulsion were characterized by Transmission Electron Microscopy (TEM), Fourier Transform Infrared Spectroscopy (FT-IR), Photo Correlation Spectroscopy (PCS). The effect of the variation in pH value, amoun...
متن کاملOrganocatalytic ring-opening polymerization.
Modern synthetic methods have revolutionized polymer chemistry through the development of new and powerful strategies for the controlled synthesis of complex polymer architectures.1-5 Many of these developments were spawned by new classes of transition metal catalysts for the synthesis of new polyolefin microstructures,5 the design of highly efficient families of “living” polymerization strateg...
متن کاملEnantioselective Ring-Opening
Ever since Nugent first reported a practical, catalytic method for the enantioselective opening of meso-epoxides with trimethylsilyl azide (TMSN3), [1] such desymmetrization reactions of epoxides and aziridines using a variety of nucleophiles have been the subject of extensive research. The less developed ring-opening reactions, those of meso-aziridines by carbon and nitrogen nucleophiles, give...
متن کاملsynthesis of polysiloxanes in microemulsion via ring opening of d4
polydimethylsiloxane (pdms) has been synthesized by ring-opening polymerization of octamethylcyclotetrasiloxane (d4) in microemulsion with acidic catalyst. the structure and properties of microemulsion were characterized by transmission electron microscopy (tem), fourier transform infrared spectroscopy (ft-ir), photo correlation spectroscopy (pcs). the effect of the variation in ph value, amoun...
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ژورنال
عنوان ژورنال: Chemical and Pharmaceutical Bulletin
سال: 1976
ISSN: 0009-2363,1347-5223
DOI: 10.1248/cpb.24.362