Results 91 to 100 of about 62,639 (299)
Synthesis of Bifunctional Allylic Compounds by Using Cyclopropenes as Functionalized Allyl Equivalents [PDF]
Angewandte Chemie, 2018 AbstractThe synthesis of uncommon bifunctional allylic derivatives bearing a silane and an alcohol within the same allylic framework is reported. This method relies on the coupling of hydrosilanes with substituted and functionalized cyclopropenes, which deliver the allyl fragment.
Sergio Mata +2 more
openaire +3 more sources
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
Carbocationic cyclisations and rearrangements in the damascone series [PDF]
, 1988 A regio- and stereoselective synthesis of the tertiary chloride 7 is described, involving the Lewis acid catalysed addition of the allyl chloride 6 to isobutene as a key step.
Bäuml, Englbert +3 more
core +1 more source
Bulky-yet-flexible carbene ligands and their use in palladium cross-coupling [PDF]
, 2019 In recent years, several classes of new N-heterocyclic carbene (NHC) ligands were developed around the concept of flexible steric bulk. The steric hindrance of these ligands brings stability to the active species, while ligand flexibility still allows ...
Cazin, Catherine +2 more
core +1 more source
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 +4 more
doaj +1 more source
Enhanced dispersibility of graphitic carbon nitride particles in aqueous and organic media via a one-pot grafting approach [PDF]
, 2017 A facile route to synthesize hydrophilically or hydrophobically grafted graphitic carbon nitride (g-CN) is reported. For this purpose, functionalized olefinic molecules with a low polymerization tendency are utilized for grafting onto the surface to ...
Antonietti, M., Kumru, B., Schmidt, B.
core +1 more source
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 +5 more
doaj +1 more source
Palladium-catalyzed heteroallylation of unactivated alkenes – synthesis of citalopram [PDF]
, 2013 A palladium-catalyzed difunctionalization of unactivated alkenes with tethered nucleophiles is reported. The versatile reaction occurs with simple allylic halides and can be carried out under air.
Adams +98 more
core +1 more source
Ribozymes for RNA‐Catalyzed RNA Methylation and Labeling
Angewandte Chemie International Edition, EarlyView.Ribozymes are powerful tools for site‐specific RNA modification. Their activities range from installing tags and fluorophores to generating natural RNA methylations, making them valuable tools to uncover the many functions that RNA plays in nature.
Carolin P. M. Scheitl +1 more
wiley +1 more source