A nickel-catalyzed decarbonylation or decarbonylation accompanied by decarboxylation cross-coupling reaction of aryl anhydrides with thiophenols as coupling partners was disclosed. This method is promoted by a commercially available, moisture-stable, and inexpensive nickel(II) precatalyst. The process can tolerate a variety of functional groups using ubiquitous aryl anhydrides as cross-coupling precursors
Regiochemistry of the coupling of aryl radicals with nucleophiles derived from the naphthyl system. Experimental and theoretical studies
作者:Adriana B. Pierini、Maria T. Baumgartner、Roberto A. Rossi
DOI:10.1021/jo00002a019
日期:1991.1
We here report the photostimulated reaction of unactivated aromatic halides with ambident nucleophiles derived from the naphthyl system such as 1- and 2-naphthylamide, 2-naphthoxide, 2-naphthalenethiolate, and 2-naphthaleneselenate ions, by the S(RN)1 mechanism of nucleophilic substitution. According to our experimental results, C-arylation in position 1 of the naphthyl moiety is the only reaction observed with 2-naphthoxide ions and it is favored over N-arylation with 1- and 2-naphthylamide ions. Heteroatom arylation is preferred over C-arylation with 2-naphthalenethiolate ions while it is the only observed reaction with 2-naphthaleneselenate ions. A theoretical study was carried out to explain the regiochemistry of the system. In competition experiments, 2-naphthalenethiolate ions proved to be 1.8 +/- 0.2 times more reactive than 2-naphthoxide ions for C-substitution toward p-anisyl radicals in liquid ammonia.
KATRITZKY, ALAN R.;MURUGAN, RAMIAH;SISKIN, MICHAEL, ENERGY AND FUELS, 4,(1990) N, C. 577-584
作者:KATRITZKY, ALAN R.、MURUGAN, RAMIAH、SISKIN, MICHAEL
DOI:——
日期:——
PIERINI, ADRIANA B.;BAUMGARTNER, MARIA T.;ROSSI, ROBERTO A., J. ORG. CHEM., 56,(1991) N, C. 580-586
作者:PIERINI, ADRIANA B.、BAUMGARTNER, MARIA T.、ROSSI, ROBERTO A.
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