Results 251 to 260 of about 1,413,381 (322)

Ring opening reactions of nitrogen heterocycles

Russian Chemical Reviews, 2019
Published data on ring opening reactions of nitrogen-containing cyclic compounds resulting in various acyclic products are integrated and systematized.
A. Smolobochkin, A. Gazizov, A. Burilov, M. A. Pudovik, O. Sinyashin   +4 more
semanticscholar   +1 more source

Synthesis of Five-Membered Iodine-Nitrogen Heterocycles from Benzimidazole-Based Iodonium Salts.

Journal of Organic Chemistry, 2018
Pseudocyclic 2-benzimidazolyl-substituted diaryliodonium salts were obtained by the reaction of the corresponding [hydroxy(tosyloxy)iodo]arenes with arenes in the presence of trifluoromethanesulfonic acid.
Yulia A Vlasenko, P. Postnikov, M. Trusova, A. Shafir, V. Zhdankin, A. Yoshimura, M. Yusubov   +6 more
semanticscholar   +1 more source

Metal- and Acid-Free C-H Formylation of Nitrogen Heterocycles: Using Trioxane as an Aldehyde Equivalent Enabled by an Organic-Soluble Oxidant.

Organic Letters, 2018
A metal-free, innate, and practical C-H formylation of nitrogen heterocycles using trioxane as a formyl equivalent is reported. This reaction provides a mild and robust method for modifying medicinally relevant heterocycles with an aldehyde handle.
J. M. Ganley, Melodie Christensen, Yu-hong Lam, Zhengwei Peng, A. Angeles, C. Yeung   +5 more
semanticscholar   +1 more source

Nitrogen Containing Heterocycles as Anticancer Agents: An Overview.

Anti-Cancer Agents in Medicinal Chemistry, 2020
BACKGROUND Cancer is spreading all over the world and it is becoming leading cause of major deaths. Today's most difficult task for every researcher is to invent a new drug that can treat cancer with minimal side effects. Many factors including pollution,
Damanpreet K. Lang, Rajwinder Kaur, R. Arora, B. Saini, S. Arora   +4 more
semanticscholar   +1 more source

Saturated nitrogen heterocyclic compounds

Chemistry of Heterocyclic Compounds, 1968
Results are given of research on the synthesis ofα-pyrrolidylalkan-3-ols by hydrogenating primary and secondary furan amines under pressure over Raney nickel in aqueous acid solution. Some views about the mechanism of the reaction are put forward. It is shown that the relative yields of theα-pyrrolidylalkan-3-ols and corresponding tetrahydrofuran ...
A. A. Ponomarev, M. V. Noritsina, A. P. Kriven'ko   +2 more
openaire   +1 more source

Fully exposed palladium cluster catalysts enable hydrogen production from nitrogen heterocycles

Nature Catalysis, 2022
C. Dong, Zirui Gao, Yinlong Li, Mi Peng, Meng Wang, Yao Xu, Chengyu Li, M. Xu, Yuchen Deng, Xuetao Qin, Fei Huang, Xuyan Wei, Yanguang Wang, Hongyang Liu, Wu Zhou, Ding Ma   +15 more
semanticscholar   +1 more source

Saturated nitrogen heterocycles

Journal of the Chemical Society, Perkin Transactions 1, 1997
Reviewing the literature published in 1999. Continuing the coverage in J. Chem. Soc., Perkin Trans. 1, 1999, 2553.
openaire   +1 more source

Silicon‐Nitrogen Heterocycles

Angewandte Chemie International Edition in English, 1966
AbstractGreat progress has recently been made in the chemistry of the silicon‐nitrogen bondC. Eaborn: Organosilicon Compounds. Butterworths, London 1960, p. 339. R. Fessenden and J. S. Fessenden, Chem. Reviews 61, 361 (1961). K. A. Andrianov, I. Haiduc, and L. M. Khananashvili, Uspekhi Khim. 32, 563 (1963); Chem. Abstr. 59, 8782 (1963). U.
openaire   +1 more source

Chalcogen–Nitrogen Heterocyclic Radicals

2023
Recent progress in organic spin science associated with neutral 1,2,3- and 1,3,2-benzodichalcogenazolyls (Herz and Wolmershäuser radicals, respectively), and anionic 2,1,3-benzochalcogenadiazolidyls and 1,2,3-benzodichalcogenazolidyls, involved in the design and synthesis of molecular conductive and magnetic materials, including spin-crossover ...
openaire   +1 more source

Photooxygenations of nitrogen heterocycles

Chemical Reviews, 1979
This review attempts to catalogue some of the reported photooxygenated reactions of different nitrogen heterocycles. Attention has been focused on the different types of products formed in these reactions and some of the suggested pathways for their formation. Although detailed studies on the mechanism of photooxygenation reactions have been performed,
M. V. George, V. Bhat
openaire   +1 more source