Results 81 to 90 of about 1,621,772 (233)

The antibacterial activity of allyl derivatives of thiosemicarbazide, N1-thiocarbamylamidrazone, 1,2,4-triazole-5-thione, 1,3,4-(thiadiazol-2-yl) amine and derivatives of bicyclic systems: 1,2,4-triazole[3,4-b]1,3-thiazine, 1,2,4-triazole[3,2-b]1,3-thiazine, 1,3,4-thiadiazole[3,2-a]pyrimidine, thiazolo[2,3-c][1,2,4]triazole

Current Issues in Pharmacy and Medical Sciences, 2012
The 1-acyl(aroil)-4-(allyl)cinnamyl-thiosemicarbazides (1-9), N1-allyl(cinnamyl)-thiocarbamyl-N3-phenyl-amidrazones (10-12), allyl derivatives of 1,2,4-triazole-5-thione (13-23), 1,3,4-(thiadiazol-2-yl) amine (24-29), derivatives of bicyclic systems: 1 ...
Leokadia Strzemecka, Urszula Kosikowska, Anna Malm   +2 more
doaj   +1 more source

1,3‐Brook Rearrangement of α‐Silyl Allylic Alcohols: Copper‐Catalyzed Enantiospecific Formation of Allenes and Copper‐Mediated ipso‐Substitution Reactions Affording Trisubstituted Alkenes

Angewandte Chemie, EarlyView.
A regioselective ruthenium catalyzed trans‐hydrosilylation of propargyl alcohols followed by a 1,3‐Brook rearrangement opens access to reactive organocopper intermediates, which evolve upon warming into allenes with strict chirality transfer to the emerging axis; alternatively, these reactive species can be trapped with a large variety of electrophiles
Jack L. Sutro, Felix Anderl, Paul Haf‐Moths, Alois Fürstner   +3 more
wiley   +2 more sources

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

Ring‐Retentive Allylation of Cyclopropanols Through Interception of Enolized Homoenolates by π‐Allylpalladium

Angewandte Chemie, EarlyView.
Cyclopropanols undergo palladium‐catalyzed, zinc‐mediated allylation with allyl acetates: the ring opens transiently to an enolized homoenolate, is intercepted by π‐allylpalladium, and recloses to furnish β‐allylated cyclopropanols. This formal “allylic cyclopropylation” broadens the reaction space for ring‐retentive functionalization of cyclopropanols.
Kento Tsukiji, Sena Miura, Naohiko Yoshikai   +2 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

Intramolecular Nickel‐Catalyzed Reductive Coupling: Enantioselective Synthesis of Tetrahydroisoquinolines and Related Heterocycles

Angewandte Chemie, EarlyView.
The successful extension of the nickel‐catalyzed asymmetric coupling of polarized 1,3‐dienes with aldehydes to an intramolecular setting opens an efficient new entry into hydroxylated N‐heterocyclic compounds, most notably valuable tetrahydroisoquinolines.
Thilo Bender, Markus Leutzsch, Yannik Sell, Alois Fürstner   +3 more
wiley   +2 more sources

Effect of the Substitution on the Protonation of Allyl Cyclopentadienyl Molybdenum(II) Compounds

, 2016
Synthesis, characterization, and reactivity of new allyl cyclopentadienyl molybdenum­(II) compounds [(η3-C3H4R1)­(η5-C5H3(R2)2)­Mo­(CO)2] (R1 = H, COOMe; R2 = COOMe, CONHtBu) are reported.
Pavel Kratochvíl (2100076), Jaromír Vinklárek (1944031), Zdeňka Padělková (1788820), Jan Honzíček (1944034), Aleš Eisner (2100073)   +4 more
core   +2 more sources

Tandem Allylic Isomerization – IMDAF Reactions and Other Isomerizations [PDF]

, 2013
The first section of this thesis describes a novel allylic isomerization, followed by an intra-molecular Diels-Alder furan cycloaddition, fragmentation, aromatization, and N-Boc deprotection cascade that leads to the formation of synthetically and ...
Xu, Jie
core  

Flavin Catalysts in Organic Synthesis

Angewandte Chemie, EarlyView.
Flavins and their congeners are potent catalysts for organic synthesis inspired by enzymatic transformations. In addition to catalysis in the flavin ground state via covalent intermediates, the excited singlet and triplet states unlock applications including photooxidation, photoreduction, and energy transfer via sensitization.
Jan Freudenberg, Golo Storch
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