نتایج جستجو برای: β dicarbonyl compounds
تعداد نتایج: 397599 فیلتر نتایج به سال:
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...
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...
Ferric phosphate accelerated condensation reaction of aldehydes, 1,3-dicarbonyl compounds and amuniom acetate refluxing ethanol that remains a common theme in current literature.
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.
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...
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...
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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