The cationic ruthenium–hydride complex [(C6H6)(PCy3)(CO)RuH]+BF4– catalyzes selective etherification of two different alcohols to form unsymmetrically substituted ethers. catalytic method exhibits a broad substrate scope while tolerating range heteroatom functional groups in forming unsymmetrical ethers, and it is successfully used directly synthesize number highly functionalized chiral nonracemic

A cationic ruthenium hydride complex, [(C6H6)(PCy3)(CO)RuH](+)BF4(-) (1), with a phenol ligand was found to exhibit high catalytic activity for the hydrogenolysis of carbonyl compounds yield corresponding aliphatic products. The method showed exceptionally chemoselectivity toward reduction over alkene hydrogenation. Kinetic and spectroscopic studies revealed strong electronic influence on catalyst activity. Hammett plot 4-methoxyacetophenone displayed two opposite linear slopes system...

Abstract Biosynthesis using plant extract is known as one of the potential techniques to synthesize different zinc oxide nanoparticles (ZnO-NPs) in size ranges. ZnO-NPs were synthesized Plumeria leaf with laboratory chemical reagent Zn(CH 3 COO) 2 and followed by micro-encapsulation biosynthesized chitosan cellulose TEOF a cross-linker employing freeze gelation method. Both neat encapsulated have been characterized FT-IR, UV spectroscopy, XRD, SEM techniques. The UV-spectroscopic analysis...

It cuts two ways: The cationic [Ru-H] complex catalyzes selective coupling of α- and β-amino acids with ketones to form α-alkylated ketone products. reaction involves CC CN bond cleavage which result in regio- stereoselective alkylation using amino acids. A broad substrate scope high functional-group tolerance is demonstrated. As a service our authors readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed may be re-organized for...

A well-defined cationic Ru–H complex catalyzes reductive etherification of aldehydes and ketones with alcohols. The catalytic method employs environmentally benign water as the solvent cheaply available molecular hydrogen reducing agent to afford unsymmetrical ethers in a highly chemoselective manner.

The catalytic system formed in situ from the reaction of a cationic Ru–H complex with 3,4,5,6-tetrachloro-1,2-benzoquinone was found to mediate regioselective deaminative coupling ketones amines form α-alkylated ketone products. Both benzylic and aliphatic primary were be suitable substrates for forming PhCOCD3 4-methoxybenzylamine showed an extensive H/D exchange on both α-CH2 (41% D) β-CH2 (21%) positions alkylation product. Hammett plot obtained acetophenone para-substituted benzylamines...

Shell waste produced by the sea food industry is one of most significant problems contributing for environmental and health hazards. The frequent method employed disposal these burning which environmentally costly due to low capacity shells. In such a scenario, conversion shrimp shell chitosan, commercially valuable product with myriad uses, could serve as an effective mode remediation. Chitosan was obtained from shellfish deproteination, demineralization, discoloration deacetylation...

Doppelte Schnittstelle: Ein kationischer [Ru-H]-Komplex katalysiert die Kupplung von Ketonen mit α- und β-Aminosäuren unter C-C- C-N-Bindungsspaltung. Als Produkte entstehen in regio- stereoselektiver Weise α-alkylierten Ketone. Die Reaktion eignet sich für ein breites Substratspektrum ist gut verträglich funktionellen Gruppen. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed may be re-organized...

Sailfin catfish (Pterygoplichthys disjunctivus) has become an invasive species within inland water bodies in Sri Lanka but there are no controlling methods presently. Present study investigates the suitability potential of acid soluble collagen/ gelatin from P. disjuctivus, to establish commercial demands for this fish. Samples were collected Udawalawa Reservoir, and categorized into two lengths groups according length; L1 (30.6 ± 2 cm) L2 (25.1 3 cm). Acid collagen was extracted skin,...

The effects of diets containing crude palm oil on muscle pigmentation and deposition carotenoids in tilapia (Oreochromis niloticus) was studied. A total 135 advanced fingerlings with an average body weight standard length 9.11±4.78 g 8.1±0.8 cm, respectively were stocked tanks for 8 weeks fed formulated (CPO) as the component. Weight, length, carotenoid levels fish measured biweekly. Muscles control diet CPO incorporated had 0.14±0.03 µg/g 0.28±0.01 µg/g, respectively. Skin 3.24±0.02...

Abstract A convenient protocol including a ruthenium hydride catalyst for the reductive etherification reaction of carbonyl compounds with alcohols to give unsymmetrical ethers is presented.