Zobrazeno 1 - 10
of 83
pro vyhledávání: '"Yu. Sh. Gol'dberg"'
Publikováno v:
Chemistry of Heterocyclic Compounds. 30:275-278
Reactions of methyl and ethyl hetaryl ketones in the CCl4/solid KOH system in the presence of 18 crown-6 at room temperature yield the corresponding 2-hetaryl-2-trichloromethyloxiranes in 8–22% yields. Reactions of sterically hindered ketones of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c1d9090110cc84b6541c26e496871dd0
https://doi.org/10.1007/bf01165690
https://doi.org/10.1007/bf01165690
Publikováno v:
Chemistry of Heterocyclic Compounds. 30:14-19
Alkylation of 2 furanyl- and 2-thienylalkyl ketoximes with alkyl, allyl, and propargyl halides in the two phase catalytic system sol. K2CO3/C6H6/18-crown-6 at room temperature causes the formation of mixtures of E- and Z-isomers of the corresponding
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b3058261895c44ee27087be6b7afa1c2
https://doi.org/10.1007/bf01164724
https://doi.org/10.1007/bf01164724
Publikováno v:
Chemistry of Heterocyclic Compounds. 29:1399-1404
Alkyl(2-furyl), alkyl(2-thienyl), and methyl pyridyl ketones form stoichiometric inclusion complexes with β-cyclodextrins. Reduction of these complexes in aqueous solution of Na2CO3 at room temperature yields the corresponding secondary alcohols wit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b79131f754067b9be9b637f5e243c5c
https://doi.org/10.1007/bf00531399
https://doi.org/10.1007/bf00531399
Publikováno v:
Synthetic Communications. 23:1235-1238
The sonochemical Grignard cross-coupling of 3-bromothiophene with chlorotrimethylsilane in THF affords (3-thienyl) trimethylsilane in 75% yield.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7c89f01576a792915d26d5137b852c69
https://doi.org/10.1080/00397919308011208
https://doi.org/10.1080/00397919308011208
Publikováno v:
ChemInform. 22
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9db747b4eaa758602a8ca3298692b19d
https://doi.org/10.1002/chin.199112225
https://doi.org/10.1002/chin.199112225
Publikováno v:
ChemInform. 22
Reactions of 3-acetylthiophene with C1-C4-alkyl iodides in a two-phase benzene/solid KOH system in the presence of l8-crown-6 afford di-C-alkylated derivatives-(3-thienyl)COCHR2 in satisfactory yields (∼50%) with high regioselectivity (70–100%).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::35d5a9b46c8f82e4224a0ab18f0b95b8
https://doi.org/10.1002/chin.199114151
https://doi.org/10.1002/chin.199114151
Publikováno v:
ChemInform. 22
C 14 H 13 Cl 2 N 5 cristallise dans P2 1 /c avec a=11,057, b=13,802, c=9,168 A, β=91,07 O , Z=4; affinement jusqu'a R=0,039. Le systeme purine est plan avec une liaison courte C ar -N exocyclique de 1,331 A. L'empilement est caracterise par des inte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2b464b3a72d174bb2f7be00be0b56f27
https://doi.org/10.1002/chin.199120066
https://doi.org/10.1002/chin.199120066
Publikováno v:
ChemInform. 22
The vapour-phase oxidation of 2-methylfuran (silvan) in air over vanadium-molybdenum oxide catalysts under specific conditions was unexpectedly found to afford 5-methylenefuran-2(5H)-one (protoanemonin) which is otherwise difficult to obtain.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8a5eb51904e9115932eaec57c0483836
https://doi.org/10.1002/chin.199106157
https://doi.org/10.1002/chin.199106157
Publikováno v:
ChemInform. 22
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f8fcd56109338bcea9220c1c6a161f0d
https://doi.org/10.1002/chin.199148137
https://doi.org/10.1002/chin.199148137
Publikováno v:
ChemInform. 22
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d7af30665702bca9c54301c7eee2b0a
https://doi.org/10.1002/chin.199135191
https://doi.org/10.1002/chin.199135191