Darstellung von Bis(1-phenoxy-propen-2-yl)-sulfanen aus Bis(1-chlor-3-phenoxy-prop-2-yl)-sulfanen mit Kalium-tert.-butylat - Zuordnung der E,E-Konfiguration
Bis(1-chloro-3-phenoxy-prop-2-yl)-sulfanes (1), anti-MARKOVNIKOV 2:1-adducts of allylphenyl ethers with sulfur dichloride at low temperature are transformed in the presence of potassium-tert.-butoxid by dehydrohalogenation / prototropic rearrangement to phenoxyvinyl sulfanes, the E,E-bis(1-phenoxy-propen-2-yl)sulfanes 3. Sulfanes 3 are of special interest as a model for unsaturated macrocycles B derivated from dithiacrown ethers A. The configuration was assigned using H-1-n.m.r.- and C-13-n.m.r.-spectroscopy. The molecular structure was determinded by X-ray diffraction techniques. Rearrangement of sulfur-substituted allyl ethers 2 to the propenyl isomers 3a proceeds in a stereospecific manner as for common allyl ethers described in the literature.
HOLIMANN, K.;MODER, M.;MUHLSTADT, M.;KLEINPETER, E.;HABERMANN, B., J. PRAKT. CHEM., 332,(1990) N, C. 503-508
作者:HOLIMANN, K.、MODER, M.、MUHLSTADT, M.、KLEINPETER, E.、HABERMANN, B.
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Hollmann, K.; Moeder, M.; Muehlstaedt, M., Journal fur praktische Chemie (Leipzig 1954), 1990, vol. 332, # 4, p. 503 - 508
作者:Hollmann, K.、Moeder, M.、Muehlstaedt, M.、Kleinpeter, E.、Habermann, B.