Results 71 to 80 of about 3,066,437 (179)
Allocolchicinoid Synthesis via Direct Arylation
, 2016 A formal enantioselective synthesis of allocolchicine and a synthesis of a C-ring analogue have been achieved by employing an intramolecular direct arylation of an aryl chloride to form the biaryl carbon−carbon bond and the seven-membered ...
Mélissa Leblanc (2677858) +1 more
core +1 more source
Tertiary Arsine Ligands for Pd-Catalyzed Direct Arylation
Catalysts for direct arylations have been extensively studied for the efficient synthesis of (hetero)biaryl compounds. Phosphine ligands are pivotal in this field, and electron-deficient phosphine ligands are advantageous for direct arylation. Due to its
Takashi Yumura (1273050) +4 more
core +2 more sources
Direct N 9 -arylation of purines with aryl halides
Chem. Commun., 2014 The reported protocol is the first to be demonstrated to efficiently couple aryl halides to purines with predictable selectivity.
Larsen, Anders Foller, Ulven, Trond
openaire +4 more sources
Palladium-Catalyzed Direct C7-Arylation of Substituted Indazoles
, 2016 A novel direct C7-arylation of indazoles with iodoaryls is described using Pd(OAc)2 as catalyst, 1,10-phenanthroline as ligand, and K2CO3 as base in refluxing DMA. Direct C7-arylation of 3-substituted 1H-indazole containing an EWG on the arene ring gave
Mohammed Naas (1662133) +4 more
core +1 more source
Direct Arylation of Polycyclic Aromatic Hydrocarbons through Palladium Catalysis
, 2016 We have discovered that the combination of Pd(OAc)2/o-chloranil can catalyze the direct C–H bond arylation of polycyclic aromatic hydrocarbons (PAHs) with arylboroxins that occurs selectively at the K-region.
Katsuaki Kawasumi (1525384) +3 more
core +2 more sources
Molecules2-Pyridone ligand-facilitated palladium-catalyzed direct C–H bond functionalization via the transient directing group strategy has become an attractive topic.
Ziting Xu +4 more
doaj +1 more source
Recent advances in direct C–H arylation: Methodology, selectivity and mechanism in oxazole series
Beilstein Journal of Organic Chemistry, 2011 Catalytic direct (hetero)arylation of (hetero)arenes is an attractive alternative to traditional Kumada, Stille, Negishi and Suzuki–Miyaura cross-coupling reactions, notably as it avoids the prior preparation and isolation of (hetero)arylmetals ...
Cécile Verrier +6 more
doaj +1 more source
Molecules, 2018 C-C bond forming reactions are central to the construction of π-conjugated polymers. Classical C-C bond forming reactions such as the Stille and Suzuki coupling reactions have been widely used in the past for this purpose.
Arthur D. Hendsbee, Yuning Li
doaj +1 more source
Palladium-Catalyzed Direct Arylation of Selenophene
, 2016 The palladium-catalyzed direct arylation of several (hetero)arenes via direct C−H bond activation using aryl halides has brought significative advances on the synthetic area in recent years.1 Such ...
Paulo H. Schneider (pq +5 more
core +1 more source
Extending the utility of [Pd(NHC)(cinnamyl)Cl] precatalysts: Direct arylation of heterocycles
Beilstein Journal of Organic Chemistry, 2012 The use of [Pd(NHC)(cinnamyl)Cl] precatalysts in the direct arylation of heterocycles has been investigated. Among four different precatalysts, [Pd(SIPr)(cinnamyl)Cl] proved to be the most efficient promoter of the reaction.
Anthony R. Martin +3 more
doaj +1 more source