Chemistry Letters
Online ISSN : 1348-0715
Print ISSN : 0366-7022
ISSN-L : 0366-7022
Volume 43 , Issue 6
Showing 1-50 articles out of 74 articles from the selected issue
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  • Isamu Moriguchi
    2014 Volume 43 Issue 6 Pages 740-745
    Published: June 05, 2014
    Released: June 05, 2014
    [Advance publication] Released: March 19, 2014
    JOURNALS FREE ACCESS
    Down-sizing of Li-host materials is one of the recent research trends to develop high-performance electrode materials. Nanosized materials are expected to show high rate capability and/or high capacities. Nanoporous materials are also candidates for high-performance electrode materials. This review introduces recent studies on nanosized and nanoporous electrode materials toward developing high-performance energy-storage devices.
    Down-sizing of Li-host materials is one of the recent research trends to develop high-performance electrode materials. Nanosized materials are expected to show high rate capability and/or high capacities. Nanoporous materials are also one of candidates of the high-performance electrode materials. This review introduces recent studies on nanosized and nanoporous electrode materials toward developing high-performance energy-storage devices. Fullsize Image
     
  • Shuji Akai
    2014 Volume 43 Issue 6 Pages 746-754
    Published: June 05, 2014
    Released: June 05, 2014
    [Advance publication] Released: April 04, 2014
    JOURNALS FREE ACCESS
    This review focuses on the dynamic kinetic resolution (DKR) of racemic allylic alcohols to produce allylic esters in high chemical and optical yields, which was achieved by combining hydrolase-catalyzed kinetic resolution and in situ racemization of the remaining less reactive enantiomers. Two classes of racemization catalysts, e.g., Ru complexes and oxovanadium compounds, are mainly discussed. Typical examples of DKR are shown along with their application in the concise syntheses of optically active compounds as valuable synthetic intermediates. The domino process integrating DKR with the active use of the installed acyl moiety for subsequent intramolecular cyclization is also discussed, which has great potential for the asymmetric syntheses of optically active fused cyclic molecules possessing multiple stereogenic centers.
    This review focuses on the dynamic kinetic resolution (DKR) of racemic allylic alcohols to produce allylic esters in high chemical and optical yields, which was achieved by combining the hydrolase-catalyzed kinetic resolution and in situ racemization of the remaining less reactive enantiomers. Two classes of racemization catalysts, e.g., Ru complexes and oxovanadium compounds, are mainly discussed. Some applications of the DKR in the fewer-step syntheses of optically active synthetic intermediates and the further integration of the DKR with the active use of the installed acyl moiety for subsequent intramolecular cyclization are discussed. Fullsize Image
     
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