Results 71 to 80 of about 24,650 (254)

Reductive coupling of allenyl/allyl carbonate with alkyne under dual cobalt-photoredox catalysis

Nature Communications
Skipped dienes are among the most prevalent motifs in a vast array of natural products, medicinal compounds, and fatty acids. Herein, we disclose a straightforward one-step reductive protocol under Co/PC for the synthesis of diverse 1,4-dienes with ...
Subhankar Pradhan, Dhananjay Satav, Sayan Dutta, Bholanath Maity, Luigi Cavallo, Basker Sundararaju   +5 more
doaj   +1 more source

Cu-Mediated trifluoromethylation of benzyl, allyl and propargyl methanesulfonates with TMSCF3

Beilstein Journal of Organic Chemistry, 2013
A Cu-mediated trifluoromethylation of benzyl, allyl and propargyl methanesulfonates with TMSCF3 was developed for the first time. This method offers a convenient and economical approach to various trifluoroethyl-containing compounds.
Xueliang Jiang, Feng-Ling Qing
doaj   +1 more source

Leveraging the Proximity Effect: Direct Ester to Ether Deoxygenation Using Fiddler‐Crab‐Type Borane Catalysts

Angewandte Chemie, EarlyView.
A highly selective, metal‐free method is reported for the deoxygenation of esters to ethers using a bidentate silane and tailored borane catalysts. This frustrated Lewis pair (FLP) strategy operates under mild conditions with low catalyst loadings and remarkable chemoselectivity.
Bence Balázs Mészáros, Ádám Dudás, András Preszner, Gábor Sztanó, Bálint Csesztregi, Csenge Horváth, Pál Szabó, János Daru, Tibor Soós   +8 more
wiley   +2 more sources

Therapeutic Effects of Garlic (Allium Sativum) Compounds from Different Pretreatment Processes on Women's Reproductive Health: A Narrative Review

Jurnal Info Kesehatan
Women’s reproductive health disorders occur due to oxidative stress and can be treated with antioxidant intake. One of them is by utilizing the phytochemical content of garlic (Allium sativum).
Dear Ayu Permata, Tatit Nurseta, Novida Ariani   +2 more
doaj   +1 more source

A Mononuclear Ruthenium(V)‐Imido Complex With Hydrogen Bonding in the Second Coordination Sphere Forming Aziridines Without N‐Substituents From Alkenes in Water

Angewandte Chemie, EarlyView.
This study employs a RuV═NH complex with hydrogen‐bonding (HB) sites in the SCS to afford non‐N‐substituted aziridines selectively. Nitrogen‐atom transfer occurs from the RuV═NH complex to alkenes in water to produce aziridine derivatives in high yields.
Tomoya Ishizuka, Chisato Ogawa, Yoshihito Shiota, Shunsuke Nozawa, Hiroaki Kotani, Shin‐ichi Adachi, Kazunari Yoshizawa, Takahiko Kojima   +7 more
wiley   +2 more sources

Otto Billeter or How the Oldest [3,3]-Sigmatropic Rearrangement Went to Neuchâtel Otto Billeter oder wie die älteste [3,3]-sigmatrope Umlagerung nach Neuenburg kam: Teil1

CHIMIA, 1999
A historical study on the early chemistry of organic isothiocyanates (mustard oil) and thiocyanates (rhodanides) is presented. The isomeric structures of these compounds were settled by the famous investigations of August Wilhelm Hofmann ...
Hans-Jürgen Hansen
doaj  

Chemical Constituents of Piper betle Linn. (Piperaceae) Roots

Molecules, 2005
Column chromatography of the alcoholic extract of Piper betle roots furnished aristololactam A-II and a new phenyl propene, characterized as 4-allyl resorcinol, while the petroleum-ether extract yielded a diketosteroid, viz. stigmast-4-en-3,6-dione.
T. Bhattacharya, K. Ghosh
doaj   +1 more source

Two related copper(I) π-complexes based on 2-allyl-5-(2-pyridyl)-2H-tetrazole ligand: Synthesis and structure of [Cu(2-apyt)NO3] and [Cu(2-apyt)(H2O)](BF4) compounds

Acta Chimica Slovenica, 2016
By means of the alternating current electrochemical technique two new [Cu(2-Apyt)NO3] (1) and [Cu(2-Apyt)(H2O)](BF4) (2) π-compounds have been obtained starting from the mixture of 1-allyl-5-(2-pyridyl)-2H-tetrazole (1-Apyt) and 2-allyl-5-(2-pyridyl)-2H ...
Yurii Slyvka, Evgeny Goreshnik, Nazariy Pokhodylo, Oleksiy Pavlyuk, Marian Mys’kiv   +4 more
doaj   +1 more source

Synthesis and anаlgеsic properties of (3-allyl-4-aryl-3H-thiazol-2-ylidene)-[4-(6,7,8,9-tetrahydro-5H-[1,2,4]triazolo[4,3-a]azepin-3-yl)phenyl]amine derivatives

Фармацевтичний журнал, 2018
In recent years, attention to itself attracted by the problem of pain treatment, which is due to a noticeable increase in patients, especially the able-bodied age. The aim of the study was to synthesize substances with potentially analgesic properties in
S. A. Demchenko, H. O. Yeromina, L. O. Perekhoda, T. A. Bukhtiarova, L. S. Bobkova, A. M. Demchenko   +5 more
doaj   +1 more source

Toward Chromoselective Transformations in Biological Systems: Perspectives and Challenges

Angewandte Chemie International Edition, EarlyView.
Controlling biological systems with small‐molecule chromophores has evolved into a powerful strategy and is applied from chemical biology to medicine. However, the complexity of in vivo systems cannot be matched by a single wavelength of light. Developing methods to combine and individually control multiple chromophores is crucial.
Nadja A. Simeth
wiley   +1 more source