نتایج جستجو برای: sulfoxides

تعداد نتایج: 3344  

Journal: :Organic & biomolecular chemistry 2011
Ana Rioz-Martínez Malgorzata Kopacz Gonzalo de Gonzalo Daniel E Torres Pazmiño Vicente Gotor Marco W Fraaije

A bacterial flavin-containing monooxygenase (FMO), fused to phosphite dehydrogenase, has been used to explore its biocatalytic potential. The bifunctional biocatalyst could be expressed in high amounts in Escherichia coli and was able to oxidize indole and indole derivatives into a variety of indigo compounds. The monooxygenase also performs the sulfoxidation of a wide range of prochiral sulfid...

Journal: :Bulletin of the Chemical Society of Japan 1971

2017
George A. Kraus Soon Hyung Woo

The Diels-Alder reaction has often been used to construct polycyclic quinones from either benzoquinones or naphthoquinones.' This strategy has led to elegant syntheses of certain anthracyclines and also many other acetate-derived compounds. Several researchers, most notably Gesson and Brassard, have determined that the presence of a chlorine or bromine atom on the starting quinone framework per...

Journal: :The Journal of the Society of Chemical Industry, Japan 1967

Journal: :The Analyst 2014
Huaming Sheng Peggy E Williams Weijuan Tang Minli Zhang Hilkka I Kenttämaa

A mass spectrometric method utilizing gas-phase ion/molecule reactions of 2-methoxypropene (MOP) has been developed for the identification of the sulfoxide functionality in protonated analytes in a LQIT mass spectrometer. Protonated sulfoxide analytes react with MOP to yield an abundant addition product (corresponding to 37-99% of the product ions), which is accompanied by a much slower proton ...

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