Ruthenium Complexes Immobilized on Functionalized Knitted Hypercrosslinked Polymers as Efficient and Recyclable Catalysts for Organic Transformations
作者:Zhifang Jia、Kewei Wang、Bien Tan、Yanlong Gu
DOI:10.1002/adsc.201600816
日期:2017.1.4
and effective catalyst for the synthesis of 2,4‐diaryl‐substituted pyridines from acetophenones, ammonium acetate (NH4OAc) and dimethylformamide (DMF), and the cycloaddition reaction of diazodicarbonyl compounds with olefins to afford dihydrofurans. In addition, a combination of HCP–PPh3–Ru and Amberlyst‐15 enabled us to establish a simple protocol for the direct synthesis of carbazole derivatives from
Efficient One-Pot Synthesis of Multi-Substituted Dihydrofurans by Ruthenium(II)-Catalyzed [3+2] Cycloaddition of Cyclic or Acyclic Diazodicarbonyl Compounds with Olefins
作者:Likai Xia、Yong Rok Lee
DOI:10.1002/adsc.201300245
日期:2013.8.12
AbstractRuthenium(II)‐phosphine complexes‐catalyzed [3+2] cycloadditions were conducted to synthesize a variety of dihydrofurans by reactions of cyclic or acyclic diazodicarbonyl compounds with olefins. This method represents a direct and efficient one‐pot synthesis for multi‐substituted dihydrofurans under mild reaction conditions with an excellent regioselectivity. Furthermore, to reduce reaction times and increase yields of dihydrofurans, microwave‐assisted tris(triphenylphosphine)ruthenium(II) chloride/ 1‐butyl‐3‐methylimidazolium tetrafluoroborate Ru(PPh3)3Cl2/[Bmim]BF4}‐catalyzed reactions were also developed. The synthesized dihydrofurans can be readily converted into biologically interesting tetrahydroindoles.magnified image
Karakhanov, R. A.; Vartanyan, M. M.; Karzhavina, N. P., Journal of Organic Chemistry USSR (English Translation), 1983, p. 2316
作者:Karakhanov, R. A.、Vartanyan, M. M.、Karzhavina, N. P.、Ignatenko, A. V.
DOI:——
日期:——
KARAXANOV, R. A.;VARTANYAN, M. M.;KARZHAVINA, N. P.;IGNATENKO, A. V., ZH. ORGAN. XIMII, 1983, 19, N 12, 2633-2634
作者:KARAXANOV, R. A.、VARTANYAN, M. M.、KARZHAVINA, N. P.、IGNATENKO, A. V.
DOI:——
日期:——
TANCHUK, N. M.;VARTANYAN, M. M.;KARZHAVINA, N. P.;KNYAZHANSKIJ, S. YA.;RU+, XIMIYA GETEROTSIKL. SOEDIN., 1986, N 3, 308-311
作者:TANCHUK, N. M.、VARTANYAN, M. M.、KARZHAVINA, N. P.、KNYAZHANSKIJ, S. YA.、RU+