Results 111 to 120 of about 42,224 (232)

Nucleophilic Gallyl Anions Enable Ga─Au Bimetallic Ammonia Activation

open access: yesAngewandte Chemie, EarlyView.
Unlocking gallyl nucleophiles: Counterion control enables formation of an unsupported gallyl─gold complex. Gold coordination induces a polarity switch at gallium, enabling cooperative activation of NH3 and related N─H/O─H substrates under mild conditions.
Hellen Videa   +3 more
wiley   +2 more sources

An NHC‐Coordinated Silicon/Sulfur Analogue of an Acyl Carbene

open access: yesAngewandte Chemie, EarlyView.
An NHC complex of an Si/S analogue of an acyl carbene is synthesized by the reaction of a disilyne with a cyclic thiourea. The observed Si2S three‐membered ring with unsymmetrical Si─S distances and a Si─Si single bond is consistent with intramolecular coordination of the silathioacyl sulfur to the silylene center.
Takuto Toyooka   +2 more
wiley   +2 more sources

Dyotropic Rearrangement of Hypervalent Iodine Species: Migrative Heterofunctionalization of Quaternary Carbons

open access: yesAngewandte Chemie, EarlyView.
1,2‐Aryl migration involving in situ‐generated alkyl iodine(III) species proceeds through a previously unrecognized 1,2‐C/I(III) dyotropic rearrangement. Migratory aryl fluorination, acetoxylation, and alkoxylation of 2‐alkyl‐2‐aryl‐3‐iodopropanoates provide α‐heterofunctionalized products, accompanied by aryl migration from the α‐ to the β‐position ...
Chen‐Xu Liu   +3 more
wiley   +2 more sources

Photochemical Ring Opening of Cyclopropyl Silyl Ethers Enables β–β Coupling, Radical‐Polar Crossover and Annulation

open access: yesAngewandte Chemie, EarlyView.
A photochemical platform enables β–β coupling of cyclopropyl silyl ethers with electron‐deficient alkenes. The resulting adducts serve as entry points into annulative and radical–polar crossover pathways, providing rapid access to fused, bridged, and spirocyclic architectures, including late‐stage scaffold diversification to diterpene‐like carbocyclic ...
Jacop Rydén   +5 more
wiley   +2 more sources

Numerical and Mechanical Research on Withdrawal Capacity of Parallel-to-grain Connection Part of Mortise and Loose Tenon Joint for Wooden Furniture

open access: yesBioResources
The mortise and loose tenon (M<) joint is a form between mortise-and-tenon (M&T) joint and dowel. It combines the advantages of easy processing and high bonding strength and has no requirement for the shape of the tenon shoulder.
Jie Chen, Huiyuan Guan
doaj  

Flame retardant biomarker changes with furniture replacement after flammability standard update. [PDF]

open access: yesEnviron Pollut
Attfield KR   +12 more
europepmc   +1 more source

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