作者:D. N. Platonov、G. P. Okonnishnikova、A. A. Levina、Yu. V. Tomilov
DOI:10.1007/s11172-015-0851-4
日期:2015.1
the corresponding chloroand bromohepta(methoxycarbonyl)cycloheptatrienes; the fluoro derivative was obtained by the exchange reaction of the corresponding bromide with silver fluoride. In contrast to the mentioned halides, the iodo derivative has proved unstable. Thermolysis of bromohepta(methoxycarbonyl)cycloheptatriene was studied, as well as its conversion to the azido and methoxy derivatives upon
Synthesis of substituted nortrop-2-enes and 3-vinylpyridin-2-ones via reaction of 1,2,3,4,5,6,7-heptamethoxycarbonylcycloheptatriene with primary amines
作者:Yury V. Tomilov、Dmitry N. Platonov、Galina P. Okonnishnikova
DOI:10.1016/j.tetlet.2009.07.114
日期:2009.10
The mode of reaction of the 1,2,3,4,5,6,7-heptamethoxycarbonylcycloheptatriene with primaryamines depends on the reaction conditions and leads to selective formation of N-substituted (heptamethoxycarbonyl)nortrop-2-enes and/or 3-vinylpyridin-2-ones bearing six ester groups. The influence of the solvent on the selectivity of the formation of nortropenes and pyridinones was studied.
A new and simple procedure for the synthesis of heptamethyl cyclohepta-1,3,5-triene-1,2,3,4,5,6,7-heptacarboxylate in a 51% yield is presented. An optimization of the reaction conditions was performed, and a convenient protocol for the isolation of the reaction product was developed. The structure of the key electrophilic intermediate was determined by means of NMR spectroscopy, and a plausible reaction
Reactions of poly(methoxycarbonyl)-substituted cycloheptatrien-1-yl- and (N-mesylaminoethenyl)cyclopentadienyl anions with some aromatic cations
作者:Yury V. Tomilov、Dmitry N. Platonov、Evgeny V. Shulishov、Galina P. Okonnishnikova、Anastasiya A. Levina
DOI:10.1016/j.tet.2015.01.024
日期:2015.3
in a molecule is reported. This method is based on the reaction of stable organic cations with a cycloheptatrienyl anion totally substituted with methoxycarbonyl groups. After the formation of a C–C bond between two different carbocycles, some further transformations take place to give cage structures. Reactions of the same cations with N-mesyl-Z-1-[1,2-bis(methoxycarbonyl)-2-(methoxycarbonylamino)ethen-1-yl]-2
A unique small molecule class of fluorophores with large Stokes shift based on the electron deficient 9-methoxypyrroloisoquinolinetrione core
作者:Michael D. Khitrov、Dmitry N. Platonov、Alexander Yu Belyy、Konstantin P. Trainov、Julia A. Velmiskina、Michael G. Medvedev、Rinat F. Salikov、Yury V. Tomilov
DOI:10.1016/j.dyepig.2022.110344
日期:2022.7
9-methoxypyrroloisoquinolinetrione moiety with a condensed imide cycle is developed. The new class of dyes show large Stokes shift up to 6519 cm-1 (Δλ up to 130 nm), however, unlike parent 5-hydroxyisoquinolones, 9-methoxypyrroloisoquinolinetrione are not superphotoacidic which could be responsible for the large Stokes shifts. At the same time methylation of 5-hydroxyisoquinolones reduces Stokes shift