1198-98-7Relevant academic research and scientific papers
The reaction of amidoximes with carboxylic acids or their esters under high-pressure conditions
Baikov,Stashina,Chernoburova,Krylov,Zavarzin,Kofanov
, p. 347 - 350 (2019)
3,5-Disubstituted 1,2,4-oxadiazoles were synthesized by the reaction of amidoximes with carboxylic acids or their esters under high-pressure conditions (10 kbar). The reaction proceeds without the use of other reagents or catalysts. Both aliphatic and aro
SYNTHESIS AND SPECTROSCOPIC STUDIES OF 5-METHYL-3-PHENYL- AND 5-METHYL-3-(o-, m-, AND p-TOLYL)-1,2,4-OXADIAZOLES.
Srivastava,Mendes e Silva
, p. 221 - 223 (1984)
Preparation of four 1,2,4-oxadiazoles, 2a-d, from O-acetyl derivatives of benzamidoximes, 1a-d, are reported. Two of them, viz. , 2b,c, were not encountered in the literature. Spectroscopic studies (IR, UV, and **1H NMR) were carried out to learn more abo
Reaction of amidoximes with acetonitrile at high pressure
Baykov, Sergey V.,Zharov, Aleksey A.,Stashina, Galina A.,Zavarzin, Igor V.,Kofanov, Evgeniy R.
, p. 264 - 265 (2016)
Reaction of amidoximes with acetonitrile giving 1,2,4-oxadiazoles occurs at 80-100 °C under a pressure of 10 Kbar without catalysts.
Convenient one-pot synthesis of 1,2,4-oxadiazoles and 2,4,6-triarylpyridines using graphene oxide (GO) as a metal-free catalyst: Importance of dual catalytic activity
Basak, Puja,Dey, Sourav,Ghosh, Pranab
, p. 32106 - 32118 (2021/12/02)
A convenient and efficient process for the synthesis of 3,5-disubstituted 1,2,4-oxadiazoles and 2,4,6-triarylpyridines has been described using an inexpensive, environmentally benign, metal-free heterogeneous carbocatalyst, graphene oxide (GO). GO plays a dual role of an oxidizing agent and solid acid catalyst for synthesizing 1,2,4-oxadiazoles and triarylpyridines. This dual catalytic activity of GO is due to the presence of oxygenated functional groups which are distributed on the nanosheets of graphene oxide. A broad scope of substrate applicability and good sustainability is offered in this developed protocol. The results of a few control experiments reveal a plausible mechanism and the role of GO as a catalyst was confirmed by FTIR, XRD, SEM, and HR-TEM analysis.
2-Iodosylbenzoic acid activated by trifluoromethanesulfonic anhydride: Efficient oxidant and electrophilic reagent for preparation of iodonium salts
Huss, Christopher D.,Kitamura, Tsugio,Saito, Akio,Yoshimura, Akira,Zhdankin, Viktor V.
supporting information, p. 16434 - 16437 (2021/10/01)
2-Iodosylbenzoic acid in the presence of trifluoromethanesulfonic anhydride is an efficient oxidant and electrophilic reagent useful for preparation of the corresponding alkenyl and aryliodonium salts. Compared to the previously reported methods of electr
Imidazole hydrochloride promoted synthesis of 3,5-disubstituted-1,2,4-oxadiazoles
Wang, Xuetong,Wang, Yin,Liu, Xiaoling,He, Tingshu,Li, Lingli,Wu, Huili,Zhou, Shangjun,Li, Dan,Liao, Siwei,Xu, Ping,Huang, Xing,Yuan, Jianyong
, (2021/10/14)
Imidazole hydrochloride as an additive promotes the reaction of amidoximes and DMA derivatives to generated 3,5-disubstituted-1,2,4-oxadiazoles in low to excellent yields without the use of coupling reagents, oxidants, strong acids or bases and other additives.
Efficient insecticidal aerosol and preparation method thereof
-
, (2020/10/30)
The invention provides an efficient insecticidal aerosol, which comprises the following components in percentage by weight: 0.1-0.5wt% of a component A, i.e. a 1, 2, 4-diazole derivative shown as a formula I, 1-1.5wt% of a component B, i.e. a marigold ext
Potassium Poly(Heptazine Imide): Transition Metal-Free Solid-State Triplet Sensitizer in Cascade Energy Transfer and [3+2]-cycloadditions
Antonietti, Markus,Guldi, Dirk M.,Hussain, Tanveer,Karton, Amir,Markushyna, Yevheniia,Mazzanti, Stefano,Oschatz, Martin,Sánchez Vadillo, José Manuel,Savateev, Aleksandr,Strauss, Volker,Tarakina, Nadezda V.,Tyutyunnik, Alexander P.,Walczak, Ralf,ten Brummelhuis, Katharina
, p. 15061 - 15068 (2020/06/17)
Polymeric carbon nitride materials have been used in numerous light-to-energy conversion applications ranging from photocatalysis to optoelectronics. For a new application and modelling, we first refined the crystal structure of potassium poly(heptazine imide) (K-PHI)—a benchmark carbon nitride material in photocatalysis—by means of X-ray powder diffraction and transmission electron microscopy. Using the crystal structure of K-PHI, periodic DFT calculations were performed to calculate the density-of-states (DOS) and localize intra band states (IBS). IBS were found to be responsible for the enhanced K-PHI absorption in the near IR region, to serve as electron traps, and to be useful in energy transfer reactions. Once excited with visible light, carbon nitrides, in addition to the direct recombination, can also undergo singlet–triplet intersystem crossing. We utilized the K-PHI centered triplet excited states to trigger a cascade of energy transfer reactions and, in turn, to sensitize, for example, singlet oxygen (1O2) as a starting point to synthesis up to 25 different N-rich heterocycles.
Efficient Synthesis of Functionalized Indene Derivatives via Rh(III)-Catalyzed Cascade Reaction between Oxadiazoles and Allylic Alcohols
Zhang, Jing,Sun, Jun-Shu,Xia, Ying-Qi,Dong, Lin
supporting information, p. 2037 - 2041 (2019/03/28)
A highly efficient rhodium(III)-catalyzed synthesis of novel functionalized indene derivatives has been achieved via C?H activation/intramolecular aldol condensation. This cascade reaction is an atom economical protocol which could be further applied to build more complex compounds. (Figure presented.).
Rhodium-catalyzed synthesis of 1-(acylamino)isoquinolines through direct annulative coupling of 3-aryl-1,2,4-oxadiazoles with alkynes
Nishii, Yuji,Bachon, Anne-Katrin,Moon, Sanghun,Bolm, Carsten,Miura, Masahiro
supporting information, p. 1347 - 1349 (2017/08/14)
A Rh(III)-catalyzed direct annulative coupling of 3-aryl-1,2,4-oxadiazoles with alkynes through coordination-assisted CH activation is developed, providing a facile route to 1-(acylamino)isoquinolines. The oxadiazole ring acts as a directing group as well as an internal oxidant.
