Results 11 to 20 of about 128,452 (331)
Cycloadditions of cyclohexynes and cyclopentyne. [PDF]
, 2014 We report the strategic use of cyclohexyne and the more elusive intermediate, cyclopentyne, as a tool for the synthesis of new heterocyclic compounds. Experimental and computational studies of a 3-substituted cyclohexyne are also described.
Garg, Neil K +4 more
core +2 more sources
How Not to Discover a New Reagent. The Evolution and Chemistry of Woollins' Reagent [PDF]
, 2012 The pathways in research can be complex. This review provides a personal account of the winding scientific and funding road that led to Woollins' reagent.
Woollins, J. Derek
core +1 more source
Hetero-Diels–Alder reactions of hetaryl and aryl thioketones with acetylenic dienophiles [PDF]
, 2015 Selected hetaryl and aryl thioketones react with acetylenecarboxylates under thermal conditions in the presence of LiClO4 or, alternatively, under high-pressure conditions (5 kbar) at room temperature yielding thiopyran derivatives.
Grzelak, Paulina +4 more
core +9 more sources
Green Processing and Synthesis, 2019 Nature and nanotechnology have not yet achieved a lucid correlation in the field of science but together they have exhibited immense potential towards the advancement and modification in future science and technology.
Fowsiya J. +7 more
doaj +1 more source
European Journal of Inorganic Chemistry, 2009 The N-heterocyclic carbenes (NHC) now hold a preferred-ligand status in organic and organometallic chemistry. Their role in catalysis continues to grow. When the editorial staff at the Beilstein Journal of Organic Chemistry contacted me to act as a guest editor for the thematic series “N-Heterocyclic carbenes”, I was more than happy to accept what ...
openaire +3 more sources
E-Journal of Chemistry, 2010 The reaction rate of Knoevenagel condensation can be dramatically enhanced by irradiating the reaction mixture containing an aldehyde, active methylene compound, L-proline and chlorobenzene with a commercial microwave oven.
Shubha Jain +3 more
doaj +1 more source
Regioselective zincation of indazoles using TMP2Zn and Negishi cross-coupling with aryl and heteroaryl iodides. [PDF]
, 2012 The metalation of various SEM-protected functionalized indazoles with TMP2Zn provides 3-zincated indazoles which undergo palladium-catalyzed Negishi cross-couplings in good ...
Andreas Unsinn +40 more
core +1 more source
Sodium-mediated magnesiation of thiophene and tetrahydrothiophene : structural contrasts with furan and tetrahydrofuran [PDF]
, 2010 Sulfur-containing heterocycles are currently attracting agreat deal of interest in several diverse fields. For instance, substituted tetrahydrothiophenes have received considerable attention due to their extremely wide-ranging chemical and biological ...
, EPSRC (Funder) +4 more
core +1 more source
Palladium-catalyzed acetylation of arenes. [PDF]
, 2014 A simple method for the preparation of aryl methyl ketones is reported. The transformation involves the Pd-catalyzed coupling of an acyl anion equivalent, acetyltrimethylsilane, with aryl bromides to afford the corresponding acetylated arenes in ...
Garg, Neil K, Ramgren, Stephen D
core +1 more source
An electrochemical gram-scale protocol for pyridylation of inert N-heterocycles with cyanopyridines
STAR Protocols, 2022 Summary: Here, we present a protocol to decyanopyridate inert N-heterocycles access to N-fused heterocycles via the mechanism of dual proton-coupled electron transfer (PCET).
Cong Niu +6 more
doaj +1 more source