One-pot synthesis of 1,2,4-oxadiazoles from carboxylic acids using 4-(dimethylamino)pyridinium acetate as efficient, regenerable, and green catalyst with ionic liquid character
A recyclable bifunctional acid–base organocatalyst with ionicliquid character has been prepared and its catalytic activity for the preparation of oxadiazoles has been investigated.
制备了具有离子液体特性的可循环使用的双功能酸碱有机催化剂,并研究了其对制备恶二唑的催化活性。
Photo-inhibition of Aβ fibrillation mediated by a newly designed fluorinated oxadiazole
作者:M. R. Mangione、A. Palumbo Piccionello、C. Marino、M. G. Ortore、P. Picone、S. Vilasi、M. Di Carlo、S. Buscemi、D. Bulone、P. L. San Biagio
DOI:10.1039/c4ra13556c
日期:——
The interaction of oxadiazole3photo-stimulated with Aβ1–40induces a structural modification responsible for fibrillogenesis inhibition.
氧代唑3与Aβ1-40光刺激相互作用,诱导结构修饰,从而抑制纤维形成。
Thiol-promoted intermolecular cyclization to synthesize 1,2,4-oxadiazoles including tioxazafen under transition metal-free conditions
and efficient one-pot intermolecular annulation reaction for the synthesis of 1,2,4-oxadiazoles from amidoximes and benzyl thiols has been developed, in which benzyl thiols act as not only reactants but also organo-catalysts. The control experiments proved that thiol substrates could facilitate the dehydroaromatization step. High yield, functional group diversity and transitionmetal-free, extra oxidant-free
Potassium Poly(Heptazine Imide): Transition Metal‐Free Solid‐State Triplet Sensitizer in Cascade Energy Transfer and [3+2]‐cycloadditions
作者:Aleksandr Savateev、Nadezda V. Tarakina、Volker Strauss、Tanveer Hussain、Katharina Brummelhuis、José Manuel Sánchez Vadillo、Yevheniia Markushyna、Stefano Mazzanti、Alexander P. Tyutyunnik、Ralf Walczak、Martin Oschatz、Dirk M. Guldi、Amir Karton、Markus Antonietti
DOI:10.1002/anie.202004747
日期:2020.8.24
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 crystalstructure 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