Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Natalia A. Cherimichkina"'
Publikováno v:
ARKIVOC, Vol 2015, Iss 7, Pp 145-157 (2015)
Externí odkaz:
https://doaj.org/article/41ebbd9199d54bdc878024d64915c63a
Autor:
Elena Yu. Schmidt, Ivan A. Bidusenko, Natalia A. Cherimichkina, Igor A. Ushakov, Boris A. Trofimov
Publikováno v:
Tetrahedron. 72:4510-4517
Aliphatic and cycloaliphatic ketones undergo selective multi-site cascade C–H functionalization with acetylene in the KOH/DMSO superbase suspension under mild conditions (70–80 °C, 0.5–1.0 h) to afford in one synthetic operation polycyclic bri
Publikováno v:
Russian Journal of Organic Chemistry. 52:1056-1058
Autor:
Nadezhda I. Protzuk, Boris A. Trofimov, Elena Yu. Schmidt, Ivan A. Bidusenko, Natalia A. Cherimichkina
Publikováno v:
European Journal of Organic Chemistry. 2014:4663-4670
The Favorsky reaction of a wide range of aldehydes and ketones with alkynes has been implemented under mild conditions (5–20 °C). Using a Bu4NOH/H2O/DMSO catalytic system, propargylic alcohols are formed cleanly in 39–93 % (mostly 72–93 %) yie
Publikováno v:
Mendeleev Communications. 28:47-48
Acetylene reacts with chalcones in the NaOBut / DMSO superbase system (3–12 atm, 70 °C, 15 min) to give, along with substituted furans, functionalized 3-exo-aryl-7-methylidene- 6,8-dioxabicyclo[3.2.1]octanes, novel frontalin congeners, which are d
Autor:
Ivan A. Bidusenko, Boris A. Trofimov, Elena Yu. Schmidt, Igor A. Ushakov, Natalia A. Cherimichkina
Publikováno v:
ChemInform. 47
Aliphatic and alicyclic ketones react with acetylene gas under conditions A) or B) to produce the required oxygen heterocycles in one pot.
Autor:
Igor A. Ushakov, Elena Yu. Schmidt, Vladimir I. Smirnov, Ivan A. Bidusenko, Natalia A. Cherimichkina, Boris A. Trofimov, Tatyana N. Borodina
Publikováno v:
ChemInform. 47
Ketones with bulky aromatic, heteroaromatic and ferrocene substituents react with acetylene in the presence of a KOH/DMSO super-base suspension (90 °C, 15 min) to give polysubstituted furans in up to 86 % isolated yields in a one-pot fashion. This a
Publikováno v:
Russian Journal of Organic Chemistry. 53:470-471
Chalcone reacted with acetylene in a suspension of KOH in DMSO at 90°C (30 min) to give 36% of 2-methyl-3,5-diphenylfuran.
Autor:
Igor A. Ushakov, E. Yu. Schmidt, Natalia A. Cherimichkina, Ivan A. Bidusenko, Boris A. Trofimov
Publikováno v:
Russian Chemical Bulletin. 63:2402-2404
Autor:
Boris A. Trofimov, Nadezhda I. Protsuk, Ivan A. Bidusenko, Igor A. Ushakov, E. Yu. Schmidt, Natalia A. Cherimichkina
Publikováno v:
Russian Journal of Organic Chemistry. 50:1207-1209
We have recently found that acetylene and alkyl aromatic and alkyl heteroaromatic ketones in the superbasic system KОН–DMSO (80С, 1 h) underwent instead of Favorskii reaction a unique selective tandem reaction leading in a single preparative sta