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1.
Krayushkin M. M. Stoyanovich F. M. Zolotarskaya O. Yu. Yarovenko V. N. Bulgakova V. N. Zavarzin I. V. Martynkin A. Yu. 《Russian Chemical Bulletin》2002,51(11):2097-2099
A new approach to the synthesis of dithienothiophene was developed, and 1,2-bis(2,6-dimethyldithieno[3,2-b;2",3"-d]thiophen-3-yl)hexafluorocyclopent-1-ene was prepared. The latter compound is the first representative of photochromic dihetarylethenes with the fused tricyclic fragments linked through the perfluorocyclene bridge. 相似文献
2.
Krayushkin M. M. Ivanov S. N. Martynkin A. Yu. Lichitsky B. V. Dudinov A. A. Uzhinov B. M. 《Russian Chemical Bulletin》2001,50(12):2424-2427
Procedures were developed for the synthesis of substituted bis(2,5-dimethyl-3-thienyl)furans based on 1,2-bis(2,5-dimethyl-3-thienyl)-2-hydroxyethanone. Dithienylethene structures in which the ethene fragment is involved in the furan or furopyrimidine system possess photochromic properties and their open forms exhibit fluorescence. 相似文献
3.
Krayushkin MM Yarovenko VN Semenov SL Zavarzin IV Ignatenko V Martynkin AY Uzhinov BM 《Organic letters》2002,4(22):3879-3881
[formula: see text] The influence of catalysts, acid chlorides, and solvents in the acylation of methyl 2-methyl-4H-thieno[3,2-b]pyrrole-5-carboxylate was studied. Conditions for the regioselective acylation processes were found. Thienopyrrole-based photochrome was synthesized for the first time. 相似文献
4.
5.
M. M. Krayushkin M. A. Kalik D. L. Dzhavadov L. G. Vorontsova Z. A. Starikova A. Yu. Martynkin V. L. Ivanov B. M. Uzhinov 《Russian Chemical Bulletin》2000,49(10):1757-1762
A series of new photochromic compounds were obtained for the first time from 1,2-bis(2-ethylthio-3-thienyl)perfluorocyclopentene by substituting bromine atoms or carboxy, alkoxycarbonyl, and carbamoyl groups for hydrogen atoms in positions 4 and 4′. Introduction of these substituents causes a slight bathochromic shift (by 20–30 nm) of a long-wavelength absorption band for the cyclic form and significantly increases the quantum yields of photocyclization ФA→B and ring opening ФB→A. Depending on the nature of a substituent, ФA→B decreases in the order COOH>COOMe>CONHAr. The quantum yields are markedly reduced when the ethylthio groups in positions 5 and 5′ are replaced by ethylsulfonyl groups (a tenfold reduction in ФA→B and a four- to fivefold reduction in ФB→A) The most considerable bathochromic shift of a long-wavelength band and the highest quantum yields of forward and reverse photoreactions were observed for 1,2-bis(4-bromo-2-ethylthio-3-thienyl) perfluorocyclopentene. 1,2- Bis (2-ethyl-5-ethylthio-4-methoxycarbonyl-3-thienyl)perfluorocyclopentene was structurally characterized by X-ray diffraction analysis. 相似文献
6.
Krayushkin M. M. Ivanov S. N. Lichitskii B. V. Dubinov A. A. Vorontsova L. G. Starikov Z. A. Martynkin A. Yu. 《Russian Journal of Organic Chemistry》2004,40(1):79-84
>A procedure was developed for the synthesis of bis(2,5-dimethyl-3-thienyl)ethenes with partially fixed molecular conformation, and their photochromic properties in solution were studied. The structure of photochromic 1-(2,5-dimethyl-3-thienyl)-7,9-dimethyl-5,6-dihydrothieno[3',4' : 3,4]pyrido[1,2-c][1,3]oxazol-3-one, as well as of 1-(2,5-dimethyl-3-thienyl)-7,9-dimethylthieno[3',4' : 3,4]pyrido[1,2-c][1,3]oxazol-3-one possessing no photochromic properties, was determined by X-ray analysis. 相似文献
7.
S. N. Ivanov B. V. Lichitskii A. A. Dudinov A. Yu. Martynkin M. M. Krayushkin 《Chemistry of Heterocyclic Compounds》2001,37(1):85-90
A novel, convenient method has been developed for the synthesis of 1,2-bis(2,5-dimethyl-3-thienyl)ethanedione, from which were prepared 5,6-bis(2,5-dimethyl-3-thienyl)-1,2,4-triazines (analogs of the photochromic 1,2-diarylethenes). The principial possibility of using 1,2,4-triazines obtained as photochromic agents was investigated. 相似文献
8.
Krayushkin M. M. Stoyanovich F. M. Zolotarskaya O. Yu. Murav"ev I. V. Martynkin A. Yu. Vorontsova L. G. Starikova Z. A. Ivanov V. L. Uzhinov B. M. 《Russian Chemical Bulletin》2001,50(1):110-115
1,2-Bis{5-(2-benzothiazolyl)-2-methyl-6-trifluoromethylthieno[3,2-b]thiophen-3-yl}hexafluorocyclopentene possessing high fatigue resistance was synthesized for the first time. Its photochromic and fluorescence properties were studied. The structure of its cyclic form was established by X-ray diffraction analysis. 相似文献
9.
M. M. Krayushkin M. A. Kalik D. V. Kozhinov A. Yu. Martynkin Yu. P. Strokach V. A. Barachevsky 《Chemistry of Heterocyclic Compounds》2005,41(3):312-316
1,2-Bis{5-(2-benzothiazolyl)-2-ethylthieno[2,3-b]thiophen-3-yl}hexafluorocyclopentene has been synthesized for the first time. It was shown that, unlike analogous derivatives of thieno[3,2-b]thiophene, on irradiation with UV light (λ = 313 nm) it did not display photochromic properties, but undergoes an irreversible photoconversion which is accompanied by the display of intense fluorescence. This raises the prospect of using this compound for creating an irreversible photoluminescent recording medium.Dedicated to V. I. Minkin on his 70th birthday.__________Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 3, pp. 360–364, March, 2005.For Part 20 see [1]. 相似文献
10.
S. N. Ivanov M. M. Krayushkin B. V. Lichitsky A. A. Dudinov A. Yu. Martynkin 《Russian Chemical Bulletin》2005,54(5):1337-1339
Methods for the synthesis of substituted bis(2,5-dimethyl-3-thienyl)ethenes with 1,3-dioxole- and 1,3-oxazole-2-thione fragments
as ethene bridges were developed. These compounds exhibit photochromic properties.
Dedicated to Academician N. K. Kochetkov on the occasion of his 90th birthday.
__________
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 5, pp. 1299–1301, May, 2005. 相似文献