نتایج جستجو برای: strecker

تعداد نتایج: 288  

2006
Varoujan A. YAYLAYAN

The importance of Strecker degradation lies in its ability to produce Strecker aldehydes and 2-aminocarbonyl compounds, both are critical intermediates in the generation of aromas during Maillard reaction, however, they can also be formed independently of the pathways established for Strecker degradation. Strecker aldehyde can be formed directly either from free amino acids or from Amadori prod...

Journal: :Organic & biomolecular chemistry 2010
Guang-Wu Zhang Dong-Hua Zheng Jing Nie Teng Wang Jun-An Ma

A general method for the one-pot, three-component Strecker reaction of ketones was developed using Brønsted acids as organocatalysts. A series of alpha-aminonitriles were obtained in good to excellent yields (79-99%). A preliminary extension to a catalytic enantioselective three-component Strecker reaction of ketones (up to 40% ee) is also described.

Journal: :Food chemistry 2016
Rosa M Delgado Francisco J Hidalgo Rosario Zamora

The Strecker-type degradation of phenylalanine in the presence of 2-pentanal and phenolic compounds was studied to investigate possible interactions that either promote or inhibit the formation of Strecker aldehydes in food products. Phenylacetaldehyde formation was promoted by 2-pentenal and also by o- and p-diphenols, but not by m-diphenols. This is consequence of the ability of phenolic comp...

Journal: :The Canadian Entomologist 1902

Journal: :FEBS letters 1969
G Brunner W Neupert

The enzymes of prolinsglutamate oxidation and the preparation of their substrates have been described by Strecker and coworkers. [ 1,3] . The presence of proline oxidase in rat liver mitochondria was described by Johnson and Strecker [2]. A rough localisation of proline oxidase and A-pyrroline&carboxylic acid dehydrogenase in locust flight muscle has been attempted by Brosemer and Veerabhadrapp...

Journal: :The Canadian Entomologist 1902

2005
Motomu Kanai Nobuki Kato Eiko Ichikawa Masakatsu Shibasaki

Two enantioselective cyanation reactions, the Strecker reaction of ketoimines and the Reissert reaction of pyridine derivatives, promoted by Lewis acid–Lewis base bifunctional asymmetric catalysts are described.

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2007
G K Surya Prakash Thomas Mathew Chiradeep Panja Steevens Alconcel Habiba Vaghoo Clement Do George A Olah

The synthesis of alpha-aminonitriles and their fluorinated analogs has been carried out in high yield and purity by the Strecker reaction from the corresponding ketones and amines with trimethylsilyl cyanide using gallium triflate in dichloromethane. Monofluoro-, difluro-, or trifluoromethyl groups can be incorporated into the alpha-aminonitrile product by varying the nature of the fluorinated ...

Journal: :The Canadian Entomologist 1912

Journal: :Chemical reviews 2011
Jun Wang Xiaohua Liu Xiaoming Feng

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