作者:O. A. Fedorova、E. N. Andryukhina、A. V. Lindeman、S. S. Basok、T. Yu. Bogaschenko、S. P. Gromov
DOI:10.1023/a:1015416029124
日期:——
Methods for the synthesis of unknown 2-styrylbenzothiazoles containing crown ether moieties with different combinations of O, S, and N-heteroatoms based on the Wittig reaction or condensation of 2-methylbenzothiazole with crown-ether benzaldehydes in the presence of strong bases or acids are proposed. The condensation in the presence of bases is accompanied by complex formation with participation of the crown ether moiety of the benzaldehyde. The complex formation has a pronounced influence on the yield of the target product and the pattern of condensation of 2-methylbenzothiazole with crown-ether benzaldehydes.
Macrocycle opening in crown ethers
作者:S. P. Gromov、A. I. Vedernikov、O. A. Fedorova
DOI:10.1007/bf01435799
日期:1996.3
Macrocycle opening in derivatives of benzocrown ethers under the action of amines is affected by the nature of the heteroatoms in the macrocycle, the nature of the functional group in the benzene ring of the crown ether, and the length, branching, and number oi hydrocarbon radicals at the amine nitrogen atom. A distinguishing feature of this reaction is the template effect of MeNH(3)(+), Me(2)NH(2)(+), Na+, and K+ ions.
Facile Synthesis of Novel 2-Styrylbenzothiazoles Containing Crown Ether Moieties
作者:Olga A. Fedorova、Elena N. Andryukhina、Sergey P. Gromov
DOI:10.1055/s-2003-37348
日期:——
Novel 2-styrylbenzothiazoles containing crownether moieties with different combinations of O, S, and N atoms were prepared by condensation of 2-methylbenzothiazole with formyl derivatives of benzocrown ethers in the presence of alkali metal alkoxides or by Wittig reaction. The role of complex formation in these syntheses is discussed.
通过 2-甲基苯并噻唑与苯并冠醚的甲酰基衍生物在碱金属醇盐的存在下缩合或通过 Wittig 反应制备新型 2-苯乙烯基苯并噻唑,其含有具有不同 O、S 和 N 原子组合的冠醚部分。讨论了复合物形成在这些合成中的作用。
Synthesis of formyl derivatives of benzocrown ethers containing N, S, and O heteroatoms in the macrocycle
作者:S. P. Gromov、O. A. Fedorova、A. I. Vedernikov、V. V. Samoshin、N. S. Zefirov、M. V. Alfimov
DOI:10.1007/bf00696971
日期:1995.1
A method for the synthesis of 4′-bromobenzodithia-15(18)-crown-5(6) and 4′-bromobenzodiaza-15 (18)-crown-5(6) by condensation of 3,4-di(2′-haloethoxy)bromobenzene with polyoxaalkanes containing terminal SH or NHMe groups was suggested. The method for the synthesis of formyl derivatives of benzocrowns containing N, S, and O heteroatoms in the macrocycle based on the metallation of appropriate bromo