581100-26-7Relevant articles and documents
Synthesis of both enantiomers of hemiesters by enantioselective methanolysis of meso cyclic anhydrides catalyzed by α-amino acid-derived chiral thioureas
Manzano, Ruben,Andres, Jose M.,Muruzabal, Maria-Dolores,Pedrosa, Rafael
supporting information; scheme or table, p. 5417 - 5420 (2010/09/07)
(Figure presented) Both ureas and thioureas derived from l- or d-valine act as bifunctional organocatalysts able to induce the enantioselective alcoholysis of mono-, bi-, and tricyclic meso anhydrides. The desymmetrization occurs in near quantitative yields and excellent enantiomeric ratios (up to >99:1) under low catalyst loading. Both enantiomers of the hemiesters can be directly obtained by changing the configuration of the catalyst.
A chiral bifunctional sulfonamide as an organocatalyst: Alcoholysis of σ-symmetric cyclic dicarboxylic anhydrides
Honjo, Takashi,Tsumura, Takeshi,Sano, Shigeki,Nagao, Yoshimitsu,Yamaguchi, Kentaro,Sei, Yoshihisa
experimental part, p. 3279 - 3282 (2010/03/05)
Enantioselective alcoholysis of σ-symmetric cyclic dicarboxylic anhydrides with benzyl alcohol catalyzed by a chiral bifunctional sulfonamide was achieved in up to 98% ee at 5 mol% loading. Georg Thieme Verlag Stuttgart - New York.
BRIDGED MACROCYCLIC MODULE COMPOSITIONS
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Page/Page column 124-125, (2010/02/11)
This invention is related to the fields of organic chemistry and nanotechnology. In particular, it relates to materials and methods for the preparation of organic synthons and bridged macrocyclic module compounds. The bridged macrocyclic module compounds may be used to prepare macrocyclic compositions such as nanofilms, which may be useful for filtration.