A fundamental quest for alkyl radical generation under mild conditions through photoinduced Brønsted acid catalysis is addressed. The optimized protocol does not require any organic dyes or transition metal photocatalyst. Under blue light irradiation with diphenyl phosphate as a catalyst and dihydropyridine derivatives as a radical source, functionalized arylmethane derivatives are obtained in high
Reactions of dialkyl (3,5-di-tert-butyl-4-oxocyclohex-2,5-dienylidenemethyl)phosphonates with alcohols and some transformations of the adducts
作者:R. R. Starodubtseva、E. M. Gibadullina、N. B. Pazilova、V. V. Syakaev、M. A. Pudovik、A. R. Burilov
DOI:10.1134/s1070363217090031
日期:2017.9
Reactions of dialkyl [(3,5-di-tert-butyl-4-oxocyclohexa-2,5-dien-1-ylidene)methyl]phosphonates with butyl, benzyl and propargyl alcohols in the presence of catalytic amounts of trifluoromethanesulfonic acid resulted in the formation of nucleophilic 1,6-addition products. Azide-alkyne cycloaddition reaction of dimethyl (3,5-di-tert-butyl-4-hydroxyphenyl)(prop-2-ynyloxy)methylphosphonate with benzyl
Reaction of phosphorylated 2,6-di-tert-butyl-4-methylenecyclohexa-2,5-dien-1-ones with 2,2′-[1,3-phenylenebis(oxy)]-di(ethan-1-amine)
作者:E. M. Gibadullina、Nguyen Thi Thu、R. R. Azmukhanova、A. R. Burilov、M. A. Pudovik、A. G. Strelnik
DOI:10.1134/s1070428017030265
日期:2017.3
Dialkyl [(3,5-di-tert-butyl-4-oxocyclohexa-2,5-dien-1-ylidene)methyl]phosphonates reacted with 2,2′-[1,3-phenylenebis(oxy)]di(ethan-1-amine) dihydrochloride at a ratio of 2: 1 in dioxane in the presence of potassium carbonate to give previously unknown tetraalkyl 1,3-phenylenebis[oxyethane-2,1-diylazanediyl-(3,5-di-tert-butyl-4-hydroxyphenylmethylene)]}bisphosphonates in high yields.
Synthesis, Structure of Phosphorylated Sterically Hindered Methylene Quinones and Ylides Thereof
作者:I. V. Galkina、V. V. Andriyashkin、S. R. Romanov、B. B. Abzhalelov、S. Zh. Kuzhamberdieva、A. S. Topalova、I. A. Litvinov、Yu. V. Bakhtiyarova
DOI:10.1134/s1070428022080036
日期:2022.8
Abstract A convenient two-stage synthesis of phosphorylated sterically hindered methylene quinones was developed. The first stage involved the reaction of phosphorous acids with a sterically hindered phenol to form the corresponding phosphonates, whose oxidation at the second stage gave the corresponding methylene quinones. The resulting stable phosphorylated sterically hindered methylene quinones
摘要 开发了一种方便的两步合成磷酸化位阻亚甲基醌。第一阶段涉及亚磷酸与位阻酚反应形成相应的膦酸盐,其在第二阶段的氧化产生相应的亚甲基醌。所得稳定的磷酸化空间位阻亚甲基醌与双膦反应产生新的磷酸化叶立德。通过化学、物理和物理化学方法(IR、 1 H 和31 P NMR,以及元素和 X 射线衍射分析)确定了合成化合物的组成和结构。
α-Aminophosphonates Containing Sterically Hindered Phenolic and N-Heterocyclic Fragments as Potentional Antitumor Agents
作者:A. M. Shakirov、E. M. Gibadullina、D. R. Islamov、A. P. Lyubina、A. D. Voloshina、A. R. Burilov
DOI:10.1134/s1070363224020233
日期:2024.2
Abstract Aliphatic amines containingN-heterocyclicfragments reacted with dialkyl [3,5-di-tert-butyl-4-oxo-2,5-cyclohexadienylidene)methyl] phosphonates to form 1,6-nucleophilic addition products. This approach was used to obtain α-aminophosphonatescontainingstericallyhinderedphenol and N-heterocyclicfragments in high yields. All the compounds were evaluated for their in vitro cytotoxicity with