Electroreductive Coupling of Aromatic Acyl Bromides to 1,2-Diketones
作者:Naoki Kise、Nasuo Ueda
DOI:10.1246/bcsj.74.755
日期:2001.4
The direct electroreduction of aromatic acyl bromides gave aromatic 1,2-diketones. The best result was obtained using a Pb cathode in acetonitrile containing Bu4NClO4 as a supporting electrolyte. Aromatic acyl bromides substituted by an electron-donating group afforded 1,2-diketones in moderate-to-good yields, whereas acylated endiols were formed exclusively from aromatic acyl bromides substituted by an electron-withdrawing group.
This invention provides, among other things, tetrahydroisoquinolines useful for treating viral infections, pharmaceutical formulations containing such compounds, as well as methods of inhibiting the replication of a virus, such as HIV, or treating a disease, such as AIDS.
Copper Catalyzed Asymmetric Synthesis of Chiral Allylic Esters
作者:Koen Geurts、Stephen P. Fletcher、Ben L. Feringa
DOI:10.1021/ja065780b
日期:2006.12.1
reagents to 3-bromopropenyl esters 1 to provide allylic esters 2 in high yields and high chemio-, regio-, and enantioselectivities. The work demonstrates that allylic asymmetric alkylation (AAA) can be done on substrates bearing a heteroatom at the gamma-position. The method is a practical route to chiral, nonracemic allylicalcohols. The use of functionalized substrates 1 or Grignard reagents leads to
Silver-catalyzed Meerwein arylation: intermolecular and intramolecular fluoroarylation of styrenes
作者:Rui Guo、Haodong Yang、Pingping Tang
DOI:10.1039/c5cc02446c
日期:——
The first example of a silver-catalyzed intermolecular and intramolecular meerwein fluoroarylation of styrenes with aryl diazonium salts has been developed. This reaction is operationally simple, scalable and proceeds under mild...
Triphenylphosphine-2,4,4,6-tetrabromo-2,5-cyclohexadienone complex as a reagent for preparation of carboxylic acid bromides
作者:E. D. Matveeva、T. A. Podrugina、N. G. Sandakova、N. S. Zefirov
DOI:10.1007/s11178-005-0042-0
日期:2004.10
Triphenylphosphine-2,4,4,6-tetrabromo-2,5-cyclohexadienone complex was successfully used as a new reagent for the synthesis of carboxylic acid bromides which were isolated as individual substances or were identified by conversion into the corresponding anilides. The reaction is chemoselective, and it can be applied to polyfunctional compounds, e.g., hydroxy acids.