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.