Zobrazeno 1 - 10
of 16
pro vyhledávání: '"I. D. Tsvetkova"'
Publikováno v:
Pharmaceutical Chemistry Journal. 3:691-694
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::86e6f1ade1da43cec0abc788946213cb
https://doi.org/10.1007/bf00761014
https://doi.org/10.1007/bf00761014
Publikováno v:
Chemistry of Heterocyclic Compounds. 6:1088-1091
Reaction of 4, 4-dichloroflavine (I) with sulfurylchloride affords 2, 3, 3, 4, 4-pentachloroflavan (II). Hydrolysis of II gives 2-hydroxy-3, 3-dichloro-4-flavanone (III), while alcoholysis with aqueous alcohols yields 2-alkoxy-3,3-dichloro-4-flavanon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a31ba90bfe46ef569c68589c66e6c00c
https://doi.org/10.1007/bf00480710
https://doi.org/10.1007/bf00480710
Publikováno v:
Chemistry of Heterocyclic Compounds. 5:316-320
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d8b26cc1c3103bc4c7f492943730ef1
https://doi.org/10.1007/bf00471133
https://doi.org/10.1007/bf00471133
Autor:
V. G. Vinokurov, V. S. Troitskaya, S. G. Rozenberg, I. D. Tsvetkova, V. A. Zagorevskii, E. K. Orlova
Publikováno v:
Chemistry of Heterocyclic Compounds. 7:675-680
The fine structures of the products of the cleavage of the heterorings of chromones and 4-pyrones by ammonia and primary and secondary amines, i.e., 2-β-aminoacrylylphenols (I) and di(β-aminovinyl) ketones (II), were studied by means of IR and PMR
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d56fe1e962d7e287a6ece72bcf65025
https://doi.org/10.1007/bf00476804
https://doi.org/10.1007/bf00476804
Publikováno v:
Chemistry of Heterocyclic Compounds. 7:14-18
The effect of amines (benzylamine, N,N-dimethylethylenediamine, and ethylenediamine) on the tert-butyl ester (I) and tert-butyl amide (II) of chromone-2-carboxylic acid was studied. In contrast to the sterically unhindered derivatives of chromone-2-c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a0268a9bcd70dd33e317da32d2e2b1d
https://doi.org/10.1007/bf00477936
https://doi.org/10.1007/bf00477936
Publikováno v:
Chemistry of Heterocyclic Compounds. 6:955-957
4-Chlorobenzopyrylium and 4-chloroflavylium salts have been synthesized, and some reactions of benzopyrylium cations of this type have been studied.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6d5261442917c0dd16fd737e95a8dd4
https://doi.org/10.1007/bf00480621
https://doi.org/10.1007/bf00480621
Publikováno v:
Chemistry of Heterocyclic Compounds. 8:416-418
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d2ed50638071f331653818e2054a0ab3
https://doi.org/10.1007/bf00477411
https://doi.org/10.1007/bf00477411
Publikováno v:
Chemistry of Heterocyclic Compounds. 6:952-954
The fine structure of the products of the opening of the pyrone ring of chromones by amines-2-(β-aminoacryloyl)phenols — has been determined.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e06d6e85a3779d45114135d484398fd3
https://doi.org/10.1007/bf00480620
https://doi.org/10.1007/bf00480620
Publikováno v:
Chemistry of Heterocyclic Compounds. 3:624-626
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5a2e912fc85d138417c4403773806b7f
https://doi.org/10.1007/bf00468328
https://doi.org/10.1007/bf00468328
Publikováno v:
Chemistry of Heterocyclic Compounds. 5:321-323
The reaction of 2-methoxycarbonyl-4, 4-dichloro-2-chromene with 1-piperidino-1-cyclohexene, for example, shows the high alkylating ability of 4, 4-dichlorochromenes toward enamines. In this case, the reaction is accompanied by the transfer of the rea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e98e69cff0376c28b1cc2ba4833d2931
https://doi.org/10.1007/bf00471134
https://doi.org/10.1007/bf00471134