Фазовий склад та магніторезистивні властивості плівкових системи Ni/Au/Ni

Магнітні багатошарові структури, які останніми роками інтенсивно досліджуються, важливі як з точки зору теоретичних досліджень, так і для практичного застосування. Прикладний інтерес викликаний їх здатністю поєднувати у собі властивості магнітом’яких і магнітотвердих матеріалів, які суттєво залежать від структури і фазового складуз разків.У даній роботі, в якості досліджуваних магнітних структур, було використано тришарові плівкові системи Ni(d) / Au(15 нм) / Ni(25 нм) отримані шляхом пошарової конденсації, де d – товщина верхнього шару Ni, яка змінювалась від 5 до 15 нм

Copper-Catalyzed [2 + 2 + 3] Annulation of 1,6-Enynes with α‑Bromo-1,3-Dicarbonyl Compounds: Synthesis of Dihydrooxepines

Copper-catalyzed [2 + 2 + 3] annulation of 1,6-enynes with α-bromo-1,3-dicarbonyl compounds is described. This reaction provides facile access to seven-membered dihydrooxepines for epidithiodiketopiperazines with two newly formed C–C bonds and one C–O bond

Palladium-Catalyzed Insertion of <i>N</i>‑tosylhydrazones and Trapping with Carbon Nucleophiles

A Pd-catalyzed three-component cross-coupling reaction of vinyl iodide, <i>N</i>-tosylhydrazone, and carbon nucleophiles is reported, and a one-pot procedure is also developed. The cross-coupling is proposed to proceed through a palladium–carbene migratory insertion, carbopalladation other than classic palladium–carbene migratory insertion, and β-H elimination. Moreover, the reaction proceeds under mild conditions and with high stereoselectivity

Organocatalytic Asymmetric Michael–Michael Cascade for the Construction of Highly Functionalized N‑Fused Piperidinoindoline Derivatives

Application of indolin-3-one derivatives in a cascade reaction for efficient assembly of complex molecules is a much less explored research area. It is demonstrated that structurally interesting polysubstituted piperidino­[1,2-<i>a</i>]­indoline compounds containing four contiguous stereocenters including one tetrasubstituted carbon center can be readily obtained with good yields (up to 94% yield) and excellent enantioselectivities (up to >99% ee) by employing indolin-3-one derivatives as substrates via bifunctional catalysis

Bi(III)-Catalyzed Intermolecular Reactions of (<i>Z</i>)-Pent-2-en-4-yl Acetates with Ethynylarenes for the Construction of Multisubstituted Fluorene Skeletons through a Cascade Electrophilic Addition/Cycloisomerization Sequence

A Bi­(III)-catalyzed method for the synthesis of highly conjugated aromatic multisubstituted fluorene with (<i>Z</i>)-pent-2-en-4-yl acetates and ethynylarenes via domino reaction is described. In this process, the reaction appears to be very general and suitable for a variety of multisubstituted fluorene

Silver-Catalyzed Decarboxylative Addition/Cyclization of Activated Alkenes with Aliphatic Carboxylic Acids

A silver-catalyzed decarboxylative addition/aryl migration/desulfonylation of <i>N</i>-phenyl-<i>N</i>-(phenyl­sulfonyl)­methacrylamide with primary, secondary, and tertiary carboxylic acids was described. The protocol provides an efficient approach for the synthesis of α-all-carbon quaternary stereocenters amides and isoquinolinediones. It was proposed that the radical generated from the silver-catalyzed decarboxylation was involved in the sequence reaction

Palladium-Catalyzed Carbene Migratory Insertion and Trapping with Sulfinic Acid Salts toward Allylic Sulfones

Allylic sulfones were synthesized with excellent selectivity and good yield via Pd-catalyzed cross-coupling of vinyl iodide with <i>N</i>-tosylhydrazone. This process involves palladium carbene migratory insertion/​trapping with sulfinic acid salts. For the previous Pd-catalyzed <i>N</i>-tosylhydrazone cross-coupling, sulfinic acid salt is generated as a byproduct. In this transformation, the diazo compound and the sulfinic acid salt, which are all generated from <i>N</i>-tosylhydrazone, were used as cross-coupling partner

Palladium-Catalyzed Carbene Migratory Insertion and Trapping with Sulfinic Acid Salts toward Allylic Sulfones

Allylic sulfones were synthesized with excellent selectivity and good yield via Pd-catalyzed cross-coupling of vinyl iodide with <i>N</i>-tosylhydrazone. This process involves palladium carbene migratory insertion/​trapping with sulfinic acid salts. For the previous Pd-catalyzed <i>N</i>-tosylhydrazone cross-coupling, sulfinic acid salt is generated as a byproduct. In this transformation, the diazo compound and the sulfinic acid salt, which are all generated from <i>N</i>-tosylhydrazone, were used as cross-coupling partner

Silver-Catalyzed Decarboxylative Addition/Cyclization of Activated Alkenes with Aliphatic Carboxylic Acids

A silver-catalyzed decarboxylative addition/aryl migration/desulfonylation of <i>N</i>-phenyl-<i>N</i>-(phenyl­sulfonyl)­methacrylamide with primary, secondary, and tertiary carboxylic acids was described. The protocol provides an efficient approach for the synthesis of α-all-carbon quaternary stereocenters amides and isoquinolinediones. It was proposed that the radical generated from the silver-catalyzed decarboxylation was involved in the sequence reaction

Silver-Catalyzed Decarboxylative Addition/Cyclization of Activated Alkenes with Aliphatic Carboxylic Acids

A silver-catalyzed decarboxylative addition/aryl migration/desulfonylation of <i>N</i>-phenyl-<i>N</i>-(phenyl­sulfonyl)­methacrylamide with primary, secondary, and tertiary carboxylic acids was described. The protocol provides an efficient approach for the synthesis of α-all-carbon quaternary stereocenters amides and isoquinolinediones. It was proposed that the radical generated from the silver-catalyzed decarboxylation was involved in the sequence reaction