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 Synthesis, characterization and application of ?/?-oligopeptides. as bifunctional organocatalysts for the aldol reaction
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Synthesis, characterization and application of ?/?-oligopeptides. as bifunctional organocatalysts for the aldol reaction

автор Valerio D. издательство Книга по Требованию География
Cтраниц 176        мягкая обложка       
Аннотация:The Synthesis of new tripeptides containing the unnatural cis-? -aminocyclopropanecarboxylic acid as a central or C-terminal building block is reported along with their evaluation for the asymmetric aldol reaction. In particular, simple amino acids such as proline can perform well as enantioselective catalysts for the aldol reaction. The peptides proved to be enantio- and diastereoselctive catalysts for the reaction between cyclic ketones and aromatic aldehydes or in the case of the intramolecular aldol reaction. Spectral evidence has been collected showing that the ? -amino acid can induce a "turn" in the short peptides which is essential for their catalytic activity. The burgeoning development of catalysis in the last two decades has provided organic chemists with a number of new, powerful tools able to promote fundamental C-C bond forming reactions in a stereoselective fashion. Their high solubility in water allowed their use in aqueous media and their recovery through a simple procedure. Organocatalysis represents a further advance in this field, allowing scientists to avoid the use of metal containing catalysts which can be more toxic, expensive and sensitive.
Автор: Valerio D.
Издательство: Книга по Требованию
Год:2010
Цена:
2783 руб
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Поиск: Synthesis, characterization and application of ?/?-oligopeptides. as bifunctional organocatalysts for the aldol reaction
НОВЫЙ ГОД СИМВОЛ 2013 ГОДАУКРАШЕНИЯ
КАРНАВАЛ НА НОВЫЙ ГОД РАСПРОДАЖА
Ортомолекулярная медицина Orthomol Устрание причин заболеваний. Ортомоль это новый метод для лечения и профилактики болезней. Orthomol - ортомолекулярная медицина.
Russia and the international economy

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