作者:Bandna、Nitul Ranjan Guha、Arun K. Shil、Dharminder Sharma、Pralay Das
DOI:10.1016/j.tetlet.2012.07.096
日期:2012.9
Ligand-free solid-supported nano and microparticles of Pd(0) (SS-Pd) were used as a heterogeneous catalyst in carbon-heteroatom bond formation reactions. Nitro substituted aryl halides reacted with oxygen, sulfur, and nitrogen nucleophiles to afford the corresponding products in good yields. A one-pot sequential cross coupling and nitro-reduction was also performed using the same SS-Pd catalyst to
The [Cu]-catalyzed SNAR reactions: direct amination of electron deficient aryl halides with sodium azide and the synthesis of arylthioethers under Cu(II)–ascorbate redox system
作者:Yogesh Goriya、C.V. Ramana
DOI:10.1016/j.tet.2010.07.032
日期:2010.9
A one pot [Cu]-promoted SNAr reaction of electron-deficient halobenzenes with sodium azide and the reduction of the intermediate arylazides under the same Cu(II)–ascorbate redox conditions leading to anilines has been documented. Control experiments revealed that both ascorbate and proline play important role in the reaction path way. Further, the use of this catalytic Cu(II)–ascorbate redox system
已有文献证明,在相同的Cu(II)-抗坏血酸氧化还原条件下,电子缺陷型卤代苯与叠氮化钠的一锅[Cu]促进S N Ar反应和中间芳基叠氮化物的还原导致苯胺。对照实验表明,抗坏血酸和脯氨酸均在反应路径中起重要作用。此外,已经探索使用这种催化性的Cu(II)-抗坏血酸氧化还原系统来合成芳基硫醚。
A highly regioselective reaction of<i>N</i>-fluoropyridinium salts with stabilized sulfur, oxygen, and nitrogen nucleophiles: A convenient route to 2-substituted pyridines
作者:Alexander S. Kiselyov、Lucjan Strekowski
DOI:10.1002/jhet.5570300530
日期:1993.10
2-Substitutedpyridines are efficiently obtained by the reactions of N-fluoropyridinium tetrafluoroborate or triflate with anions derived from benzenethiols, phenols, azoles, cyanamide, and with azide anion. The results are consistent with a nucleophile addition at the position 2 of the N-fluoropyridinium cation as the major reaction pathway.
This invention relates to aryl carbonyl derivatives which are activators of glucokinase which may be useful for the management, treatment, control, or adjunct treatment of diseases, where increasing glucokinase activity is beneficial.
This invention relates to aryl carbonyl derivatives which are activators of glucokinase which may be useful for the management, treatment, control, or adjunct treatment of diseases, where increasing glucokinase activity is beneficial.