Optimum bifunctionality in a 2-(2-pyridyl-2-ol)-1,10-phenanthroline based ruthenium complex for transfer hydrogenation of ketones and nitriles: impact of the number of 2-hydroxypyridine fragments
作者:Bhaskar Paul、Kaushik Chakrabarti、Sabuj Kundu
DOI:10.1039/c6dt01961g
日期:——
A rare example of a highly active bifunctional Ru(ii) catalyst containing only one 2-hydroxypyridine (2-HP) unit is presented which exhibited exceptionally high catalytic activity in transfer hydrogenation of ketones and nitriles.
Carbon-13 nuclear magnetic resonance assignments of pactamycin and related compounds.
作者:DWIGHT D. WELLER、ARTHUR HABER、KENNETH L. RINEHART Jr.
DOI:10.7164/antibiotics.31.997
日期:——
All resonances observed in the 13C NMR spectrum of the antitumor antibiotic pactamycin and its degradation product pactamyçate have been assigned, employing off-resonance and specific proton decoupling as well as comparison with the 13C NMR spectra of the model compounds m-aminoacetophenone and ethyl 6-methylsalicylate.
nm) of platinized TiO2 suspended in Ar-purged acetonitrile solution of aliphatic and aromatic primary amines produced Schiffbases together with H2 and NH3 at room temperature. Solvent acetonitrile was partly reduced on the Pt site to inhibit the reduction of the Schiffbases into secondary amines.
Formation of mixed-ligand fluoroboron cations involving C=N donors. A <sup>19</sup>F and <sup>11</sup>B NMR study
作者:J Stephen Hartman、Elizabeth I Ilnicki、James AW Shoemaker、Wojciech R Szerminski、Zheng Yuan
DOI:10.1139/v98-138
日期:1998.9.1
difluoroboron and chlorofluoroboron cations DD'BF2+ and DD'BFCl+ involving at least one C=N donor molecule can be formed by Cl- displacement from the mixedborontrihalideadducts D·BF2Cl and D·BFCl2, provided that the steric hindrance of D' and especially D is not too great. The DD'BF2+ cations can also be formed by selective displacement of one donor molecule in certain D2BF2+ cations, present in acetone as their
Copper‐Promoted Oxidative Amidation of Imines: A Facile Route to Amides
作者:Zhonghua Cao、Da Sheng、Zhiyang Zhang、Haitao Ren、Yong Liu、Songhai Wu、Jiaxiang Zhang、Xu Han
DOI:10.1002/ejoc.202400315
日期:——
A method for preparing amides by imines oxidation is developed using aldehydes and amines as raw materials. Using copper oxide as catalyst and Oxone as oxidant without any coupling reagents, the reaction conditions are mild. A wide substrate range including pesticide and drug molecules has been demonstrated in 32–90 % yields.