Ruthenium(II)-Catalyzed <i>Ortho</i>-C–H Alkylation of Naphthylamines with Diazo Compounds for Synthesis of 2,2-Disubstituted π-Extended 3-Oxindoles in Water
Ruthenium(II)-catalyzed ortho-C–H alkylation of naphthylamines with diazocompounds for the synthesis of 2,2-disubstituted π-extended 3-oxindoles has been developed. The method represents the first example of C–H alkylation via carbenoid insertion in water as a sustainable solvent. The procedure includes an inexpensive ruthenium catalyst as well as aqueous media and results in the release of benign
C8–H bond activation vs. C2–H bond activation: from naphthyl amines to lactams
作者:Renyi Shi、Lijun Lu、Hangyu Xie、Jingwen Yan、Ting Xu、Hua Zhang、Xiaotian Qi、Yu Lan、Aiwen Lei
DOI:10.1039/c6cc06358f
日期:——
Pd-catalyzed selective amine-oriented C8-H bond functionalization/N-dealkylative carbonylation of naphthyl amines has been achieved. The aminegroup from dealkylation is proposed to be the directing goup to promote this process. It...
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.
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.