Zobrazeno 1 - 10
of 16
pro vyhledávání: '"El. O. Chukhajian"'
Publikováno v:
Russian Journal of Organic Chemistry. 55:1124-1130
Cyclization of allyl[3-(4-bromophenyl)prop-2-ynyl]ammonium bromides under basic catalysis conditions, unlike their propargyl analogs, occurs under heating of the reaction mixture at 90–92°C. Cyclization, which is the main reaction route, is accomp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ab8b0fecfd2578174703e49309ed1845
https://doi.org/10.1134/s1070428019080104
https://doi.org/10.1134/s1070428019080104
Publikováno v:
Russian Journal of Organic Chemistry. 55:473-478
Dialkyl(4-hydroxybut-2-yn-1-yl)[3-(4-bromophenyl)prop-2-yn-1-yl]ammonium chlorides in the presence of 2 equiv of potassium hydroxide at room temperature underwent exothermic intramolecular cycloaddition, followed by recyclization, to give 8-bromo-4-(
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df3ec1fe3285f038da6185dc55ea8ba4
https://doi.org/10.1134/s1070428019040092
https://doi.org/10.1134/s1070428019040092
Autor:
E. O. Chukhajian, L. V. Ayrapetyan, K. G. Shahkhatuni, El. O. Chukhajian, Henry A. Panosyan, H. S. Mkrtchyan
Publikováno v:
Russian Journal of Organic Chemistry. 55:319-324
Study of the intramolecular cyclization of [3-(4-bromo(or methyl)phenylprop-2-yn-1-yl](3-phenylprop-2-en-1-yl)ammonium bromides has shown that the presence of a bromine atom or methyl group in the para position of the aromatic ring inhibits the proce
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::40e22a6f56cbb37d935a03ed58b1ee3f
https://doi.org/10.1134/s1070428019030072
https://doi.org/10.1134/s1070428019030072
Publikováno v:
Russian Journal of Organic Chemistry. 53:178-183
During vacuum distillation of 3-(dialkylamino) derivatives of 1,4-diphenyl- and 4-phenyl-1-(p-chlorophenyl) hex-5-en-1-ynes deamination occurs resulting in a high yield of p-diarylbenzenes. The amines transformation into terbenzenes is a domino-react
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d0a902c9dcdb2c6bfacc86ad86086e7
https://doi.org/10.1134/s1070428017020063
https://doi.org/10.1134/s1070428017020063
Publikováno v:
Chemistry of Heterocyclic Compounds. 49:1274-1280
Dialkyl(3-arylprop-2-yn-1-yl)(3-phenylprop-2-en-1-yl)ammonium bromides, in contrast to their allyl analogs containing a 3-arylprop-2-en-1-yl group, undergo cyclization in aqueous solution in the presence of base upon prior heating to give potentially
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::074adf2b159ab08afc91d66dff797cbe
https://doi.org/10.1007/s10593-013-1375-1
https://doi.org/10.1007/s10593-013-1375-1
Publikováno v:
Chemistry of Heterocyclic Compounds. 48:1314-1320
When heated in an alkaline aqueous medium, dialkyl(3-phenylpropen-2-yl)(3-phenylpropyn-2-yl)- ammonium bromides undergo intramolecular cyclization, forming N,N-dialkyl-4(9)-phenyl-3a,4-dihydrobenzo[f]isoindolinium bromides. The cyclization products u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0644a5a98ca092d8a8409066fdfe3a4a
https://doi.org/10.1007/s10593-012-1138-4
https://doi.org/10.1007/s10593-012-1138-4
Publikováno v:
Chemistry of Heterocyclic Compounds. 46:151-157
Dialkyl(4-hydroxybutyn-2-yl)[3-(p-tolyl)propyn-2-yl]ammonium chlorides undergo a diene synthesis type intramolecular cyclization in aqueous base medium to give 2,2-dialkyl-4-hydroxymethyl-6-methyl-benzo[f]isoindolinium chlorides. Under conditions of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3394c01ca62e56a8fcc9b0f4a3179b41
https://doi.org/10.1007/s10593-010-0486-1
https://doi.org/10.1007/s10593-010-0486-1
Publikováno v:
Chemistry of Heterocyclic Compounds. 45:1302-1307
It was found that dialkyl(4-hydroxybut-2-ynyl)methallyl- and dialkylcrotyl(4-hydroxybut-2-ynyl)- ammonium halides undergo a Stevens rearrangement under the influence of aqueous alkali with transfer of the reaction center in the receiving group and in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9cefa950ead849055141302baccf5165
https://doi.org/10.1007/s10593-010-0425-1
https://doi.org/10.1007/s10593-010-0425-1
Publikováno v:
Chemistry of Heterocyclic Compounds. 44:671-676
Cyclization of dimethylcrotyl(3-vinyl-or-3-isopropenylpropyn-2-yl)ammonium bromides in the presence of base gave a mixture of the isomeric 2,2-dialkyl-4-methyl-and 2,2-dialkyl-4,6-dimethyl-2,6,7,7a-tetrahydro-1H-isoindolium bromides. Basic fission of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8a3809c1059d197e0cbd53119ed92ba6
https://doi.org/10.1007/s10593-008-0090-9
https://doi.org/10.1007/s10593-008-0090-9
Publikováno v:
Chemistry of Heterocyclic Compounds. 43:701-707
The intramolecular cyclization of dialkyl(2-butynyl-4-hydroxy)[3-(p-chlorophenyl)propargyl]ammonium chlorides, catalyzed by aqueous KOH, was realized. It was shown that the obtained products — 2,2-dialkyl-6-chloro-4-hydroxymethylbenzo[f]isoindolini
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5ff8ad030213b4aef2a7b0d95ff25fad
https://doi.org/10.1007/s10593-007-0114-x
https://doi.org/10.1007/s10593-007-0114-x