A Metathesis-Based Approach to the Synthesis of 2-Pyridones and Pyridines
作者:Timothy J. Donohoe、Lisa P. Fishlock、Panayiotis A. Procopiou
DOI:10.1021/ol702684d
日期:2008.1.1
intermediates, which are in the correct oxidation state to undergo a base-induced elimination to reveal the aromatic 2-pyridone. This mild and novel approach to six-memberedheteroaromatic compounds then provides access to a wide variety of substituted pyridines in excellent overall yield.
Indium mediated allylation of glyoxylate oxime ethers, esters and cyanoformates
作者:Dougal J. Ritson、Russell J. Cox、John Berge
DOI:10.1039/b402764g
日期:——
An indium mediated procedure has been developed for the allylation of activated O-functionalised oximes and nitriles as exemplified by a variety of glyoxylate derivatives. This method gives the corresponding free (or protected) amine in a one pot-process. The method is regiospecific and is carried out under remarkably mild conditions so that even oxime esters can be subjected to the typical reaction conditions.
Azolobenzazepine derivatives as neurologically active agents
申请人:Zeneca Limited
公开号:US06124281A1
公开(公告)日:2000-09-26
The invention relates to azolobenzazepine derivatives of formula (I), wherein: X is O or S; R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently hydrogen, perfluorolower-alkyl, halogen, nitro or cyano; and C together with the carbon atoms to which it is attached forms a 5-membered aromatic heterocycle selected from the group consisting of a pyrazol and triazole, to pharmaceutical compositions containing them and to methods for the treatment of neurological disorders utilizing them. ##STR1##
Ruthenium-catalysed conversion of oxime ethers into nitriles
作者:Naveen Anand、Nathan A. Owston、Alexandra J. Parker、Paul A. Slatford、Jonathan M.J. Williams
DOI:10.1016/j.tetlet.2007.09.028
日期:2007.10
The conversion of oxime ethers into nitriles has been achieved under neutral conditions using Ru(CO)(PPh3)3H2 and the bidentate ligand Xantphos as the catalyst.
使用Ru(CO)(PPh 3)3 H 2和二齿配体Xantphos作为催化剂,在中性条件下实现了肟醚向腈的转化。
Metal complex and phase transfer catalysed nitric oxide reactions
作者:Slavomir Falicky、Howard Alper
DOI:10.1039/c39870001039
日期:——
by bubbling nitric oxide through a solution of the bromide in t-pentyl alcohol–3-M aqueous sodium hydroxide containing a palladium or ruthenium complex as catalyst and a quaternary ammonium salt as phasetransfer agent; this provides the first example of a catalytic reaction of halides which involves free or co-ordinated nitric oxide and is also the first report of a phasetransfer reaction utilizing