Formation of Aliphatic and Aromatic α-Hydroxy Ketones by Zygosaccharomyces bisporus
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چکیده
منابع مشابه
Formation of Aliphatic and Aromatic a-Hydroxy Ketones by Zygosaccharomyces bisporus
Zygosaccharomyces bisporus, Acyloin Formation, Pyruvate Decarboxylase The wild-type yeast strain Zygosaccharomyces bisporus CBS 702 produced a-hydroxyketones (acyloins) from amino acid precursors after transamination to the corresponding 2-oxo acids. The key enzyme of the subsequent decarboxylation and C C bond forming reaction, pyruvate decarboxylase (PD C), was examined for its substrateand s...
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A ciclização de Prins catalisada por iodo entre álcoois homoalílicos e cetonas foi investigada. Condições anidras e atmosfera inerte não são necessárias neste protocolo ausente de metais. A reação do 2-(3,4-di-hidronaftalen-1-il)propan-1-ol com seis cetonas simétricas alifáticas levou ao produto desejado em 67-77% de rendimento. A ciclização foi realizada com quatro cetonas alifáticas assimétri...
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Alpha-Hydroxy ketones with an aromatic and aliphatic substituent were prepared with condensation of aromatic and aliphatic aldehydes in the presence of polymer-bound thiazolium salt.
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A ruthenium complex formed from commercially available [Ru(p-cymene)Cl2]2 and 1,4-bis(diphenylphosphino)butane catalyzes the racemization of aromatic α-hydroxy ketones very efficiently at room temperature. The racemization is fully compatible with a kinetic resolution catalyzed by a lipase from Pseudomonas stutzeri. This is the first example of dynamic kinetic resolution of α-hydroxy ketones at...
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Reaction of various ketones with [hydroxy(tosyloxy)iodo]benzene (HTIB) followed by treatment of the α-tosyloxy ketones thus generated in situ with NaN3 offers a one-pot procedure for the synthesis of α-azido ketones. The HTIB used in this conversion may also be generated in situ by using iodosobenzene in combination with p-toluenesulphonic acid.
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ژورنال
عنوان ژورنال: Zeitschrift für Naturforschung C
سال: 2000
ISSN: 1865-7125,0939-5075
DOI: 10.1515/znc-2000-7-814