Salicylic Acid-Catalyzed One-Pot Hydrodeamination of Aromatic Amines by <i>tert</i>
-Butyl Nitrite in Tetrahydrofuran
作者:Diego Felipe-Blanco、Francisco Alonso、Jose C. Gonzalez-Gomez
DOI:10.1002/adsc.201700475
日期:2017.8.17
in situ formed diazonium salts (fromaromaticamines) has been observed in the presence of 10‐mol% salicylic acid, using tetrahydrofuran as the hydrogen donor. The reaction proceeds efficiently at 20 °C for a wide range of substituted anilines, even at 10‐mmol scale, without any other additive. The same protocol has been adapted to the selective deuterodeamination of some aromaticamines. Control experiments
The mediation of aryl ketone deuteration by [Ir(PPh3)3(cod)]+.BF4?
作者:John M. Herbert
DOI:10.1002/jlcr.925
日期:2005.4
The usefulness of the hydrogen isotope exchange catalyst, [Ir(PPh3)3(cod)]+.BF4− (1), is explored. It appears that isotopic exchange mediated by 1 occurs via a series of complexes in which all three phosphine ligands are retained. The disadvantage of this system is that the catalytic intermediates are necessarily sterically hindered, with the result that the range of substrates for which the system
Decarboxylative C–H Arylation of Benzoic Acids under Radical Conditions
作者:Sangwon Seo、Mark Slater、Michael F. Greaney
DOI:10.1021/ol3010694
日期:2012.5.18
A decarboxylative radical cyclization reaction has been developed for the synthesis of fluorenones. The reaction uses Ag(I)/K2S2O8 to oxidatively decarboxylate an aroylbenzoic acid to an aryl radical, which undergoes cyclization to afford fluorenone products in good yield.