Xem 1-7 trên 7 kết quả Oxo reaction
  • Chemicals are part of our everyday lives. The hundreds of chemicals that are manufactured by industrial processes influence what we do and how we do it. This book offers descriptions and process details of the most popular of those chemicals. The manufacture of chemicals involves many facets of chemistry and engineering which are exhaustively treated in a whole series of encyclopedic works, but it is not always simple to rapidly grasp present status of knowledge from these sources.

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  • This book provides an insider ’ s view of the status of the fi ne chemical industry, as well as its outlook. It covers all aspects of this dynamic industry, with all of its stakeholders in mind, viz. employees, customers, suppliers, investors, students and educators, media representatives, neighboring communities, public offi cials, and anyone else who has an interest in this segment of the chemical industry. Safety, health, environmental, and regulatory issues are discussed only briefl y, as the related subjects are extensively covered in the specialized literature....

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  • An abundant oxidative lesion, 8-oxo-7,8-dihydroguanine (8-oxoG), often directs the misincorporation of dAMP during replication. To prevent muta-tions, cells possess an enzymatic system for the removal of 8-oxoG. A key element of this system is 8-oxoguanine-DNA glycosylase (Fpg in bacteria, OGG1 in eukaryotes), which must excise 8-oxoG from 8-oxoG:C pairs but not from 8-oxoG:A.

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  • We have previously shown thatMycobacterium tuberculosisFprA, an NADPH-ferredoxin reductase homologous to mammalian adrenodoxin reductase, promotes the oxidation of NADP + to its 4-oxo derivative 3-car-boxamide-4-pyridone adenine dinucleotide phosphate [Bossi RT, Aliverti A, Raimondi D, Fischer F, Zanetti G, Ferrari D, Tahallah N, Maier CS, Heck AJ, Rizzi Met al.

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  • Six new benzopyran derivatives were synthesized by reduction reaction and Michael reaction from malloapelta B.

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  • The prototypical catalytic reductiveC–Cbond formations, the Fischer-Tropsch reaction [1] and alkene hydroformylation [2], were discovered in 1922 and 1938, respectively [3,4]. These processes, which involve reductive coupling to carbon monoxide, have long been applied to the industrial manufacture of commodity chemicals [5]. Notably, alkene hydroformylation, also known as the oxo-synthesis, has emerged as the largest volume application of homogeneous metal catalysis, accounting for the production of over 7 million metric tons of aldehyde annually.

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  • The LmbB1 protein, participating in the biosynthesis of lincomycin,was heterologously expressed inEscherichia coli, purified in its active form, and characterized as a dimer of identical subunits. Methods for purification and analysis of the LmbB1 reaction product were developed. Molecular mass and fragmentation pattern of the product revealed by capillary electrophoresis-mass spectrometry were in agree-ment with its proposed structure, 4-(3-carboxy-3-oxo-propenyl)-2,3-dihydro-1H-pyrrole-2-carboxylic acid.

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