Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Sergei V. Vitt"'
Autor:
Lyudmila V. Afanas’eva, Pavel V. Petrovskii, Irena S. Akhrem, Sergei V. Vitt, Alexander Orlinkov, Dzul’etta V. Avetisyan
Publikováno v:
Tetrahedron Letters. 49:1399-1404
Alkanes (or cycloalkanes) and CO in the presence of superelectrophilic systems CX4·2AlBr3 (X = Cl, Br) have been applied for the first time as equivalents of acylium salts in one-pot selective syntheses of amides from amines.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::060345e8fee2d77943613a6740b00d7a
https://doi.org/10.1016/j.tetlet.2007.12.070
https://doi.org/10.1016/j.tetlet.2007.12.070
Publikováno v:
Russian Chemical Bulletin. 50:2394-2400
Cycloheptane, methylcyclohexane, cyclooctane, and ethylcyclohexane were selectively carbonylated with CO. The reactions of cycloalkanes with CO at –40 °C in the presence of the superelectrophilic system CBr4·2AlBr3 in CH2Br2 followed by treatment
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b20f83b353879429a7299565beaa4f3
https://doi.org/10.1023/a:1015091731172
https://doi.org/10.1023/a:1015091731172
Publikováno v:
Russian Chemical Bulletin. 50:81-87
Cyclohexane and methylcyclopentane dimerize into dimethyldecalins on treatment with superelectrophilic systems containing polyhalomethanes (CBr4, CCl4, CHCl3) and aluminum halides (AlBr3, AlCl3). At 20 °C, the yields of C12H22 hydrocarbons reach 140
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6f6edd6a9a1ce7bd69870aa4116155e
https://doi.org/10.1023/a:1009529302679
https://doi.org/10.1023/a:1009529302679
Autor:
Irena S. Akhrem, Sergei V. Vitt, Alexander Orlinkov, Pavel V. Petrovskii, Lyudmila V. Afanas’eva
Publikováno v:
Tetrahedron Letters. 41:9903-9907
Carbonylation of cycloheptane, methylcyclohexane, cyclooctane and ethylcyclohexane by CO in the presence of CBr4·2AlBr3 at −40°C and 1 atm was performed with good yields and selectivities. Individual esters of tertiary carboxylic acids of the cyc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::93970e082d36337338f5244f6eb4cd7a
https://doi.org/10.1016/s0040-4039(00)01761-5
https://doi.org/10.1016/s0040-4039(00)01761-5
Publikováno v:
Russian Chemical Bulletin. 48:2279-2284
Cyclopentane is converted into a mixture of cyclohexanes, decalins, and adamantanes (and isomeric cycloalkanes) in overall yields of 18–31% (w/w) under the action of superelectrophilic complex CBr4·2AlBr3 either in CH2X2 (X=Br, Cl) or without a so
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b407a629cdf5ac871d47c43b4db30370
https://doi.org/10.1007/bf02498272
https://doi.org/10.1007/bf02498272
Autor:
Pavel V. Petrovskii, Sergei V. Vitt, Irena S. Akhrem, Lyudmila V. Afanas’eva, Alexander Orlinkov
Publikováno v:
Tetrahedron Letters. 40:5897-5900
The polyhalomethane based superelectrophilic systems allowed us to accomplish the first efficient and selective carbonylation of n-butane and n-pentane with CO. Depending on the nature of the superelectrophilic system, Me 3 CCOOR or EtCH(Me)COOR (R =
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7eb167e8fd5fe6416beca82a524a7cd
https://doi.org/10.1016/s0040-4039(99)01125-9
https://doi.org/10.1016/s0040-4039(99)01125-9
Autor:
Pavel V. Petrovskii, Irena S. Akhrem, I. M. Churilova, Sergei V. Vitt, Alexander Orlinkov, Lyudmila V. Afanas’eva
Publikováno v:
Russian Chemical Bulletin. 47:918-923
A new approach to the direct synthesis of ketones from alkanes or cycloalkanes (RH), CO, and silanes is proposed. Ketones were obtained in 50–97% yields from propane, butane, cyclopentane, cyclohexane, and methylcyclopentane on treatment with CO an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::233e7baa64729f9d9988935c3b0c4dab
https://doi.org/10.1007/bf02498161
https://doi.org/10.1007/bf02498161
Publikováno v:
Russian Chemical Bulletin. 46:491-495
The inefficient formylation of adamantane by CO initiated by superacid systems based on polyhalomethanes and aluminum halides becomes selective in the presence of methylcyclopentane and affords 1-adamantanecarbaldehyde in an almost quantitative yield
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a153e02f2076aaec94de7848378c5121
https://doi.org/10.1007/bf02495402
https://doi.org/10.1007/bf02495402
Publikováno v:
Mendeleev Communications. 15:185-187
Selective one-pot tetrahydrofuran ring opening by saturated hydrocarbons and CO in the presence of CX4·2AlBr3 superelectrophilic complex leading to esters RCOO(CH2)4Br has been performed for the first time.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::efe3969812b18675f4e71596e5d27911
https://doi.org/10.1070/mc2005v015n05abeh002112
https://doi.org/10.1070/mc2005v015n05abeh002112
Publikováno v:
Tetrahedron Letters. 37:3363-3366
Propane has been found to alkylate pentafluorobenzene in the presence of aprotic organic superacids CBr4·nAlBr3 (n = 1 or 2) in CH2Br2 solution at 0°, giving C6F5Pri (1) in almost quantitative yield. In the absence of propane at the 20°, pentafluo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::11138ff6938afe3def4b5c8bdad0d40b
https://doi.org/10.1016/0040-4039(96)00547-3
https://doi.org/10.1016/0040-4039(96)00547-3