نتایج جستجو برای: β dicarbonyl compounds

تعداد نتایج: 397599  

2013

The thiating effect of 1,3,2,4-dithiadiphosphitane2,4-bis(4-methoxyphenyl)-2,4-disulfide (1) on car­ bonyl compounds, leads to the formation of their thio-analogous [1—4], We have recently reported on the reaction of 1 with acetamides [5] and dicarbonyl compounds [6]. On the other hand, there are no compounds having o-diazo-thiono groups were re­ corded in the literature. Based on this findings...

2016
Mathias Glatz Christian Schröder-Holzhacker Bernhard Bichler Berthold Stöger Kurt Mereiter Luis F. Veiros Karl Kirchner

ABSTRACT In the present work, we have prepared a series of octahedral Fe(II) complexes of the type trans-[Fe(PNP)(CO)2Cl]+-PNP are tridentate pincer-type ligands based on 2,6-diaminopyridine. These complexes are formed irrespective of the size of the substituents at the phosphorus sites and whether cis-[Fe(PNP)(Cl2)(CO)] or trans-[Fe(PNP)(Cl2)(CO)] are reacted with CO in the presence of 1 equiv...

Banafsheh Yazdanparast Farahnaz K. Behbahani

Ferric phosphate accelerated condensation reaction of aldehydes, 1,3-dicarbonyl compounds and amuniom acetate refluxing ethanol that remains a common theme in current literature.

Banafsheh Yazdanparast Farahnaz K. Behbahani

Iron (III) phosphate catalyzed condensation reaction of aldehydes, 1,3-dicarbonyl compounds and amuniom acetate refluxing ethanol that remains a common theme in current literature.

2013
Thao Nguyen Dwayaja Nadkarni Shilpa Dutta Su Xu Sanghun Kim Srinivasan Murugesan Sadanandan Velu

Pyrroloquinone ring systems are important structural units present in many biologically active molecules including a number of marine alkaloids. For example, they are found in a series of marine metabolites, such as tsitsikammamines, zyzzyanones, wakayin, and terreusinone. Several of these alkaloids have exhibited antimicrobial, antimalarial, antifungal, antitumor, and photoprotecting activitie...

Journal: :Food chemistry 2016
Yaqin Xu Gaijie Liu Zeyuan Yu Xiumei Song Xingguo Li Yu Yang Libo Wang Lu Liu Jing Dai

A novel polysaccharide fraction (BCP-1) was extracted from the black currant fruit by ultrasound-assisted compound enzyme and purified by chromatography on macroporous resin D4006, anion-exchange Q-Sepharose FF and Sephadex G-100 columns. BCP-1 consisted of galacturonic acid, xylose, mannose, glucose and galactose in a ratio of 1.00:3.14:1.83:17.90:1.98 and its molecular weight was 14,050 Da. T...

Journal: :Agricultural and Biological Chemistry 1972

Journal: :Russian Journal of General Chemistry 2021

The reaction of cyanothioacetamide with aromatic aldehydes and 1,3-dicarbonyl compounds followed by aminomethylation or S-alkylation gave a series heterocyclic derivatives 1,2,3,4-tetrahydropyridine 1,4,5,6,7,8-hexahydroquinoline fragment. resulting were tested for analgesic activity in vivo. Some the prepared showed an antinociceptive effect superior to that ketorolac dynamics.

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