SCI时时刷

search
+
Chalcogen bonding enabled photosynthesis of aryl selenides from aryl sulfonium salts
While aryl sulfonium salts have emerged as a powerful tool for the synthesis of aryl-aryl/CF3 chalcogenides, a general and...
Total Synthesis of (±)-Villosin C and (±)-Teuvincenone B
Herein, we report the first total synthesis of 17(15→16)-abeo-abietane diterpenoids (±)-villosin C (5) and (±)-t...
Solvent and Catalyst Dependent Palladium-Catalyzed Switchable Chemodivergent Cascade Cyclizations of Trimethylenemethanes with ortho-Formyl Cinnamates
Chemodivergent synthetic methodologies enable the efficient generation of structural diversity via simple transformations....
Gold Catalyzed Spirocyclization of 1-Ene-4,9- and 3-Ene-1,7-diyne Esters to Azaspiro[4.4]nonenones and Azaspiro[4.5]decadienones
A synthetic method for the preparation of a structurally diverse range of spirocyclic pyrrolidines and piperidines efficie...
N-Heterocyclic Nitrenium Charge Transfer Catalysis via Inner-Sphere Electron Transfer Concerted with Halogen-Atom Dissociation
Visible light photoredox-catalyzed reactions have become essential tools in organic synthesis. However, these transformati...
Route to Carbon-sp3 Bridging Spiro-Molecules: Synthetic Methods and Optoelectronic Applications
Aromatic molecules with spiro structures have attracted considerable attention in the realm of organic functional material...
Facile Access to Thieno[2,3-b]thiophenes and Poly-substituted thiophenes through Divergent Annulation of Ketene 1,3-Dithietanes
A Lewis acid-catalyzed tandem nucleophilic addition/C-S cleavage/intramolecular annulation of ketene 1,3-dithietanes with ...
Divergent synthesis of nitrocyclopropanes and isoxazoline N-oxides from nitro compounds and vinyl sulfonium salts
New annulation reactions involving aliphatic nitro compounds and vinyl sulfonium salts were described. Selective methods w...
Mn-Electrocatalytic Oxidative C(sp3)-H Azidation of 2-Oxindoles, β-Keto Esters and Azidation-Cyclization of Trypamines
A concise electrocatalytic oxidative C(sp3)-H azidation approach for constructing 3-azido-oxindols, α-azido-β-ketol esters...
Visible light photoredox-catalyzed deoxydisulfuration of alcohols
Herein, we present a versatile approach for the photoredox-catalyzed deoxydisulfuration of primary, secondary, and tertiar...
Pd-Catalyzed Vinyl C-H Amination with Diaziridinone
This work describes a Pd-catalyzed vinyl C-H amination of N-(quinolin-8-yl)acrylamides with di-t-butyldiaziridinone, leadi...
Polycyclic Aromatic Hydrocarbons Containing Antiaromatic Chalcogenopyrano[3,2-b]chalcogenopyrans
Bicyclic chalcogenopyrano[3,2-b]chalcogenopyran with two six-membered chalcogenopyran rings fused with each other contains...
Sequential annulation of bidentate diamines for the modular access to N-fused/helical/spiro-carbazole scaffolds
The Cu-catalysed mono N-annulation of bidentate diamines with cyclic diaryliodonium salts has been disclosed to build N-am...
Electrochemical difunctionalization of alkenes and alkynes for the synthesis of organochalcogens involving C–S/Se bond formation
Organochalcogen compounds containing C−S/Se bond are motifs frequently found in various natural products, bioactive compou...
A catalyst-free cross-coupling of isocyanates and triarylboranes for secondary amide synthesis
Described herein is a distinct protocol for secondary amide formation through a catalyst-free cross-coupling of isocyanate...
Revision of the full stereochemistry of telomycin
Telomycin, a nonribosomal cyclic depsipeptide antibiotic discovered in the late 1950s, has recently been shown to display ...
Photocatalytic Formation of P-S Bonds via CdSeS/CdZnS Quantum Dots under Visible Light Irradiation
In this study, we utilize the highly stable alloy core CdSeS/CdZnS quantum dots (QDs) as a robust photocatalyst for the ox...
Visible-light-driven selective difluoroalkylation of α-CF3 alkenes to access CF2-containing gem-difluoroalkenes and trifluoromethylalkanes
An efficient visible-light-promoted selective difluoroalkylation of α-trifluoromethyl alkenes with difluoroalkylating reag...
Visible light-induced manganese-catalyzed aminocarbonylation of alkyl iodides under atmosphere pressure at room temperature
Manganese catalyst, with advantages including low cost and relatively low toxicity, is attractive to apply it in carbonyla...
“Light Promoted Metal-free Regio- and Stereoselective Isoperfluoropropylation of Unactivated alkenes with i-C3F7-Iodine(III) Reagent
The isoperfluoropropyl group (i-C3F7) is a large analogue of the classical CF3, featuring a more steric hindrance and stro...
Electrochemical (Radio)-Halodesilylation of Aromatic Silanes
We have developed a green and efficient electrochemical halodesilylation of trimethylsilanes to synthesize aryl halides. T...
Directed Copper-Catalyzed Dehydrogenative C-H Amination of Unsaturated Sialic Acids
This study reports the first example of a Cu-catalyzed dehydrogenative C(sp2)–H amination of sialyl glycals. The scope of ...
Regio- and Stereoselective Hydrosilylation of Alkynes with Alkoxysilanes for β-(Z) Vinylsilanes Catalyzed by Dirhodium (II)/XantPhos Complex
A Rh2(OAc)4/XantPhos ((9,9-dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphane)) catalyzed regio- and stereoselective hydr...
Water-soluble hexakisimidazolium cages: synthesis and selective binding for sodium urate
Three hexakisimidazolium-incorporated molecular cages o-, m- and p-HiCages have been prepared through the condensation of ...
Syntheses of 3H‑1,2,4-Triazol-3-ones by Copper-Promoted Oxidative N-N Bond Formation between Amidines and Isocyanates
In this study, an efficient strategy was developed for constructing of 3H-1,2,4-triazol-3-ones via copper-promoted [3+2] a...
Isatin-based spiro indolenine alkaloids from Isatis indigotica Fortune with anti-neuroinflammatory and acetylcholinesterase inhibitor effects
Isatin-based spiro indolenine alkaloids are derived from mixed biosynthetic origins, and the C-2 and C-3 carbonyl groups o...
Transition-metal catalyzed reactions of diazo compounds and N,N-dialkylnitrosoamines
In this study, we present a Ru(II)-catalyzed reaction involving diazoindandiones and N,N-dialkylnitrosoamines, leading to ...
N-Aminophthalimide-Mediated Aerobic Deborohydroxylation of Boronic Acid in Air
An efficient and convenient metal-free aerobic deborohydroxylation of boronic acids into phenols and alcohols in air is re...
Gold Catalysed Regio- and Chemoselective Azo Coupling of 1,2- and 1,4-Diazoquinones with 1H-Indoles
A synthetic method to prepare (E)-3-arylazoindoles efficiently that relies on the gold(I)-catalysed azo coupling of 1,2- a...
Visible-light-driven C(sp3)–H alkylation of heterobenzylic amines via electron donor–acceptor complexes
The heterobenzylic amines, such as α-alkyl substituted oxadiazole methylamine skeletons present as essential motifs in pha...
阅读更多
format_indent_increase