Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Margarita A. Lapitskaya"'
Autor:
Alexander O. Terent'ev, Elena D. Daeva, Kasimir K. Pivnitsky, Margarita A. Lapitskaya, Vera A. Vil
Publikováno v:
Mendeleev Communications. 28:505-507
Easily available dimethylmalonoyl peroxide is proposed as a reactive alternative to the widely known spirocyclopropyl analogue for the use in the arene acyloxylation and other oxidative reactions.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1a6360f0a51ccb7595bb02e5bf07c436
https://doi.org/10.1016/j.mencom.2018.09.018
https://doi.org/10.1016/j.mencom.2018.09.018
Publikováno v:
Mendeleev Communications. 25:51-53
Bis(tri-n-butyltin) oxide quickly reacts with chromatographic silica gel even when a solution of this oxide is filtered through silica gel, which results in stannylation of a fraction of the surface hydroxyl groups of silica gel to give n-Bu3SnOSi°
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c22ae93d856f8ba5acc6d18d956856c
https://doi.org/10.1016/j.mencom.2015.01.019
https://doi.org/10.1016/j.mencom.2015.01.019
Autor:
Margarita A. Lapitskaya, Alexander O. Terent'ev, Elena D. Daeva, Vera A. Vil, Kasimir K. Pivnitsky
Publikováno v:
ChemInform. 47
Potassium acetate catalyzed alcoholysis of spirocycloalkyl malonyl peroxides affords 1-alkoxycarbonylcycloalkane-1-percarboxylic acids which are suitable for epoxidation of olefins.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c7ddb579061107b307039e823281c729
https://doi.org/10.1002/chin.201624063
https://doi.org/10.1002/chin.201624063
Publikováno v:
Russian Chemical Bulletin. 58:1067-1071
A synthesis of the title compound, the synthon for the constanolactones and other eicosanoids, has been developed from achiral starting compounds. The synthesis is based on the S-enantiodirected dihydroxylation of the double bond to introduce a chira
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::be71dd27f3a34106c27a4d03a9e5e0f0
https://doi.org/10.1007/s11172-009-0136-x
https://doi.org/10.1007/s11172-009-0136-x
Autor:
Tatyana G. Lobastova, Margarita A. Lapitskaya, Kasimir K. Pivnitsky, Marina V. Donova, S. M. Khomutov, L. L. Vasiljeva
Publikováno v:
Steroids. 74:233-237
The synthesis of 3beta-hydroxy-androsta-5,7-dien-17-one from 3beta-hydroxy-androst-5-en-17-one (dehydroepiandrosterone, DHEA) via microbial 7alpha-hydroxylation has been accomplished. At the first stage, 3beta,7alpha-dihydroxy-androst-5-en-17-one was
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d72922aa53edf6e469946a2bcc0e5b31
https://doi.org/10.1016/j.steroids.2008.10.019
https://doi.org/10.1016/j.steroids.2008.10.019
Publikováno v:
Russian Chemical Bulletin. 56:1648-1654
A six-step synthesis of methyl (5Z,8S)-8,9-epoxynon-5-enoate, a known synthon of constanolactones and hepoxilins, from 5-hexynoic ester was developed. The enantiomeric purity of the synthon was attained by S-enantiodirected dihydroxylation of a doubl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::01cb5d7c2853a7e3f06e0b23665387b3
https://doi.org/10.1007/s11172-007-0257-z
https://doi.org/10.1007/s11172-007-0257-z
Publikováno v:
Mendeleev Communications. 15:175-178
Adducts of d-ephedrine with chiral mono- and disubstituted epoxides are convenient derivatives for the determination of enantiomer ratios in epoxides by 1H NMR spectroscopy.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6363b480b847c460a4981ce899852e05
https://doi.org/10.1070/mc2005v015n05abeh002151
https://doi.org/10.1070/mc2005v015n05abeh002151
Publikováno v:
Mendeleev Communications. 23:257-259
Potassium fluoride deposited on calcium fluoride serves as an easily available and convenient reagent for the removal of all major types of organotin residues from reaction mixtures by a simple filtration.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c09312ad2f5a1eeb0725ece0ae4d38c4
https://doi.org/10.1016/j.mencom.2013.09.006
https://doi.org/10.1016/j.mencom.2013.09.006
Publikováno v:
Russian Chemical Bulletin. 53:2617-2625
The stereochemistry of SN2 and SN2′ substitutions of the allylic mesyloxy group in mesylates of prostaglandin allylic epimeric 13- and 15-alcohols under the action of various nucleophiles (H2O, MeOH, AcOH, LiBr) was studied. The substitution accomp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a26939905b975cd4968dbd4d4eafd2ba
https://doi.org/10.1007/s11172-005-0163-1
https://doi.org/10.1007/s11172-005-0163-1
Publikováno v:
Mendeleev Communications. 14:287-290
The unknown 11,12-threo-stereoisomers of B-type trioxilins, (10R,11R,12S)-TrXB3, its (10S)-epimer and their enantiomers were synthesized (as methyl esters) from a common racemic precursor, viz., methyl rac-10-hydroxyeicos-11(E)-ene-5,8,14-triynoate,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af50a1c83ff284d6d19a1f44d616dfba
https://doi.org/10.1070/mc2004v014n06abeh002003
https://doi.org/10.1070/mc2004v014n06abeh002003