Zobrazeno 1 - 10
of 14
pro vyhledávání: '"M. B. Lipkind"'
Publikováno v:
Russian Chemical Bulletin. 70:2156-2163
Publikováno v:
Russian Chemical Bulletin. 70:925-932
The gas-phase copyrolysis of tetrafluoroethylene and buta-1,3-diene in a flow tube reactor at 490–510 °C gives 3,3,4,4-tetrafluorocyclohex-1-ene, which is selectively converted to 1-bromo- or 1-chloro-2,3-difluorobenzene via intermediate steps of
Publikováno v:
Russian Chemical Bulletin. 69:270-279
2,3-Difluoronaphthalene (1) was selectively converted into 1-methyl-, 1,4-dimethyl-, 1-acetyl-, 1-acetyl-4-methyl-, 1-formyl-, and 1-carboxyl-substituted 2,3-difluoronaphthalenes using lithiation with BuLi as a key step. Nitration and bromination of
Publikováno v:
Russian Chemical Bulletin. 69:68-75
The gas-phase copyrolysis of chlorotrifluoroethylene with buta-1,3-diene, penta-1,3-diene, or isoprene in a flow reactor at 440–480°C gave 4-chloro-4,5,5-trifluorocyclohex-1-enes. The latter treated with aqueous KOH under condition of phase-transf
Publikováno v:
Russian Chemical Bulletin. 68:1391-1401
The gas-phase pyrolysis of isomeric 2-chloro-2-fluoro-1-phenylcyclopropanes in a flow reactor at 250–430 °С gives 1-phenyl- and 3-phenyl-3-chloro-2-fluoropropenes. Under similar conditions, methyl-substituted gem-chlorofluorocyclopropanes undergo
Publikováno v:
Russian Chemical Bulletin. 68:1232-1238
The gas-phase co-pyrolysis of styrene with CHClF2 in a flow reactor at 550–650 °C gives 2,3-difluoronaphthalene in two parallel reaction channels. The main channel includes decomposition of CHClF2 to difluorocarbene, whose subsequent cycloaddition
Publikováno v:
Russian Chemical Bulletin. 64:658-663
A gas-phase pyrolysis of methyl-substituted gem-difluorocyclopropanes in a flow-tube reactor in the presence of Al2O3 at 185—250 °C gives 2-fluorobuta-1,3-dienes and vinylacetylenes.
Publikováno v:
Russian Chemical Bulletin. 63:2250-2254
Gas-phase pyrolysis of of 1-chloro-1-fluoro-2-methylcyclopropanes in an empty or filled with quartz pieces flow-tube reactor at 430—460 °C gives 2-fluorobuta-1,3-dienes (in 42—75% yields), whereas pyrolysis in the presence of Al2O3 at 150—250
Publikováno v:
Mendeleev Communications. 23:19-21
CuCl-catalyzed isomerization of gem-chlorofluorocyclopropanes into chlorofluoroalkenes occurs as a result of the ring opening accompanied by the migration of chlorine atom. In the case of vinyl- or cyclopropyl-containing substrates, chlorofluoroalkad
Publikováno v:
ChemInform. 44