Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Maxim R. Demidov"'
Publikováno v:
Chemistry of Heterocyclic Compounds. 57:1170-1175
Publikováno v:
Chemistry of Heterocyclic Compounds. 57:1045-1050
Three-component condensation of in situ generated pyridinium aroylmethylides with isatins or aromatic aldehydes and cyclic 1,3-dicarbonyl compounds gave a series of condensed 2-aroyl-2,3-dihydrofurans. The reaction proceeds diastereoselectively and r
Publikováno v:
Advanced Synthesis & Catalysis. 363:3737-3743
Publikováno v:
The Journal of Organic Chemistry. 86:7460-7476
A library of trans-4,5-dihydrofuran-3-carbonitriles was synthesized in a diastereoselective manner in good yields by the three-component reaction of β-ketonitriles, carbonyl- and semistabilized pyridinium ylide precursors, and aldehydes in the prese
Autor:
Anastasiya N. Dobrokvashina, Dmitry V. Osipov, Maxim R. Demidov, Vitaly А. Osyanin, Yuri N. Klimochkin
Publikováno v:
Chemistry of Heterocyclic Compounds. 57:568-573
Three-component condensation of in situ generated pyridinium acyl methylides with aromatic aldehydes and 4-hydroxythiocoumarin led to a series of 2-acyl-2,3-dihydro-4H-thiochromeno[4,3-b]furan-4-ones. The reaction proceeds diastereoselectively with t
Publikováno v:
Synthesis. 53:2449-2456
A new oxidative transformation of 1H-benzo[f]chromenes into spirodimers under the action of selenium dioxide was discovered, leading to spirodimers, which are dibenzannulated analogues of naturally occurring welwitschins E and F. In the reaction, bot
Publikováno v:
Chemistry of Heterocyclic Compounds. 56:1417-1422
The addition of dihalocarbenes to 1H-benzo[f]chromenes and 4H-chromenes gave a number of dihalotetrahydro(benzo)cyclopropa[b]-chromenes containing donor and acceptor substituents at different positions. It was found that in the case of 1,3-disubstitu
Publikováno v:
Chemistry of Heterocyclic Compounds. 56:603-606
The oxidation of 3-aryl-1H-benzo[f]chromenes with Koser’s reagent in methanol afforded a series of benzoflavylium tosylates. This reaction is the first example of the use of polyvalent iodine compounds to access arene-condensed pyrylium salts.
Autor:
Dmitry V. Osipov, Vitaly А. Osyanin, Yuri N. Klimochkin, Kirill S. Korzhenko, Maxim R. Demidov
Publikováno v:
Chemistry of Heterocyclic Compounds. 57:599-601
By the reaction of 3-aryl-1H-benzo[f]chromenes with N-bromosuccinimide in aqueous acetone, a series of 2-aroyl-1,2-dihydronaphtho-[2,1-b]furans unsubstituted at the C-1 position were obtained as a result of formal addition of hypobromous acid to the
Publikováno v:
The Journal of organic chemistry. 86(11)
A library of