Synthesis of 4-Aryl-1H-1,2,3-triazoles through TBAF-Catalyzed [3 + 2] Cycloaddition of 2-Aryl-1-nitroethenes with TMSN3 under Solvent-Free Conditions
摘要:
TBAF-catalyzed [3 + 2] cycloaddition reactions of 2-aryl-1-cyano- or 2-aryl-1-carbethoxy-1-nitroethenes 1 with TMSN3 under SFC allow the corresponding 4-aryl-5-eyano- or 4-aryl-5-carbethoxy-1H-1,2,3-triazoles 2 to be prepared under mild reaction conditions and with good to excellent yields (70-90%). The proposed protocol does not require dried glassware or inert atmosphere.
Dolomite (CaMg(CO3)2) as a recyclable natural catalyst in Henry, Knoevenagel, and Michael reactions
摘要:
Iranian dolomite (CaMg(CO3)(2)) which consists of double-layered carbonates with Ca2+ and Mg2+ ions was utilized as a heterogeneous base catalyst in the C-C, C-N, and C-S bond forming reactions via the Henry, Knoevenagel, aza-Michael, and thia-Michael transformations under mild conditions in water. Iranian dolomite has been characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Brunauer Emmett Teller (BET) and XRF chemical analysis, while its basic strength was evaluated by following the Hammett indicators procedure. This water-insoluble natural catalyst demonstrated high activity and was reusable. (c) 2012 Elsevier B.V. All rights reserved.
Iranian dolomite (CaMg(CO3)(2)) which consists of double-layered carbonates with Ca2+ and Mg2+ ions was utilized as a heterogeneous base catalyst in the C-C, C-N, and C-S bond forming reactions via the Henry, Knoevenagel, aza-Michael, and thia-Michael transformations under mild conditions in water. Iranian dolomite has been characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Brunauer Emmett Teller (BET) and XRF chemical analysis, while its basic strength was evaluated by following the Hammett indicators procedure. This water-insoluble natural catalyst demonstrated high activity and was reusable. (c) 2012 Elsevier B.V. All rights reserved.
POLYANSKAYA, A. S.;BODINA, R. I.;SHCHADRIN, V. YU.;ABOSKALOVA, N. I., ZH. ORGAN. XIMII, 1984, 20, N 11, 2481-2482
作者:POLYANSKAYA, A. S.、BODINA, R. I.、SHCHADRIN, V. YU.、ABOSKALOVA, N. I.
DOI:——
日期:——
METCHKOV, T. D.;DEMIREVA, Z. I., J. CHEM. AND ENG. DATA, 1984, 29, N 4, 483-484
作者:METCHKOV, T. D.、DEMIREVA, Z. I.
DOI:——
日期:——
SOKOLOVA L. N.; POLYANSKAYA A. S.; ABOSKALOVA N. I.; DEMIREVA Z. I.; ABDU+, V SB. 30 GERTSENOVSK. CHTENIYA, XIMIYA,
作者:SOKOLOVA L. N.、 POLYANSKAYA A. S.、 ABOSKALOVA N. I.、 DEMIREVA Z. I.、 ABDU+
DOI:——
日期:——
Aryl(hetaryl)-containing gem-cyanonitroethenes: Synthesis, structure, and reactions with 2,3-dimethyl-1,3-butadiene
作者:R. I. Baichurin、N. I. Aboskalova、E. V. Trukhin、V. M. Berestovitskaya
DOI:10.1134/s1070363215080101
日期:2015.8
Methods of aryl(hetaryl)-substituted gem-cyanonitroethenes preparation are summarized, and the products structure elucidation by means of H-1, C-13 NMR, IR, and UV spectroscopy methods is discussed. E-Configuration of the compounds obtained has been proved. Reaction of the studied gem-cyanonitroethenes with 2,3-dimethyl-1,3-butadiene affords the diene synthesis adducts-6-aryl(hetaryl)-3,4-dimethyl-1-nitro-1-cyano- 3-cyclohexenes.