11 research outputs found
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
One-Pot Access to Indolo[2,3-<i>b</i>]quinolines by Electrophile-Triggered Cross-Amination/Friedel–Crafts Alkylation of Indoles with 1-(2-Tosylaminophenyl)ketones
Activation of C2 and C3 of indoles by molecular iodine
(I<sub>2</sub>) and base followed by in situ reaction with 1-(2-tosylaminophenyl)ketones
or 2-tosylaminobenzaldehyde can afford highly substituted indolo(2,3-<i>b</i>)quinolines in moderate to excellent yields (up to 99%).
The reaction provides a metal-free selective difunctionalization of
indoles. The synthetic potential of the protocol has been illustrated
by the synthesis of neocryptolepine and its 11-methyl analogue
One-Pot Access to Indolo[2,3-<i>b</i>]quinolines by Electrophile-Triggered Cross-Amination/Friedel–Crafts Alkylation of Indoles with 1-(2-Tosylaminophenyl)ketones
Activation of C2 and C3 of indoles by molecular iodine
(I<sub>2</sub>) and base followed by in situ reaction with 1-(2-tosylaminophenyl)ketones
or 2-tosylaminobenzaldehyde can afford highly substituted indolo(2,3-<i>b</i>)quinolines in moderate to excellent yields (up to 99%).
The reaction provides a metal-free selective difunctionalization of
indoles. The synthetic potential of the protocol has been illustrated
by the synthesis of neocryptolepine and its 11-methyl analogue
Gold-Catalyzed Cascade Reaction of Hydroxy Enynes for the Synthesis of Oxanorbornenes and Naphthalene Derivatives
An efficient and selective gold-catalyzed cascade reaction for the synthesis of oxanorbornenes and naphthalene derivatives from easily prepared hydroxy enynes has been developed. Divergent products could be obtained from the same substrates by different gold catalytic systems
Facile Synthesis of Carbazoles via a Tandem Iodocyclization with 1,2‑Alkyl Migration and Aromatization
A strategy
for the synthesis of iodocarbazoles through a tandem
iodocyclization with migration and aromatization is presented. This
sequential cascade process is concisely conducted at room temperature
and in a short time. Moreover, the obtained halides can be further
applied to palladium-catalyzed coupling reactions, which act as the
important intermediates for building other valuable compounds
Facile Synthesis of Carbazoles via a Tandem Iodocyclization with 1,2‑Alkyl Migration and Aromatization
A strategy
for the synthesis of iodocarbazoles through a tandem
iodocyclization with migration and aromatization is presented. This
sequential cascade process is concisely conducted at room temperature
and in a short time. Moreover, the obtained halides can be further
applied to palladium-catalyzed coupling reactions, which act as the
important intermediates for building other valuable compounds
Electrophilic Cyclization of Aryl Propargylic Alcohols: Synthesis of Dihalogenated 6,9-Dihydropyrido[1,2‑<i>a</i>]indoles via a Cascade Iodocyclization
A strategy for the
synthesis of 6,9-dihydropyrido[1,2-<i>a</i>]indoles through
a cascade iodocyclization of 4-(3-methyl-1<i>H</i>-indol-1-yl)-1,1-diphenylbut-2-yn-1-ol
derivatives is presented.
This reaction was conducted under very mild conditions and in a short
time. The reactions are metal-free, are environmentally friendly and
give up to 94% yield. Moreover, the obtained halides allow functional
group diversification by palladium-catalyzed coupling reactions, which
could act as potential intermediates for the synthesis of valuable
compounds
Electrophilic Cyclization and Intermolecular Acetalation of 2‑(4-Hydroxybut-1-yn-1-yl)benzaldehydes: Synthesis of Diiodinated Diepoxydibenzo[<i>c</i>,<i>k</i>][1,9]dioxacyclohexadecines
An
expedient strategy for the preparation of diiodinated diepoxydibenzo[<i>c</i>,<i>k</i>][1,9]dioxacyclohexadecines
from readily available 2-(4-hydroxybut-1-yn-1-yl)benzaldehydes through
electrophile-triggered tandem cyclization/intermolecular acetalation
sequence has been presented. The electrophilic macrocyclization can
be performed under mild conditions and in up to gram quantities. Moreover,
palladium-catalyzed coupling and reduction reactions of the resulting
iodides could efficiently afford oxa-macrocycles
Correction to “Facile Synthesis of Halogenated Spiroketals via a Tandem Iodocyclization”
Correction to “Facile Synthesis of Halogenated
Spiroketals via a Tandem Iodocyclization
AgSCF<sub>3</sub>‑Mediated Trifluoromethylthiolation/Radical Cascade Cyclization of 1,6-Enynes
A AgSCF<sub>3</sub>-mediated radical cascade cyclization/trifluoromethylthiolation
of 1,6-enynes triggered by a C–C triple bond is developed.
This protocol also provides another opportunity to construct a valuable
trifluoromethylthio-substituted polycyclic fluorene system through
the formations of one C–SCF<sub>3</sub> bond and two C–C
bonds in a single step